About the Number 140 (one hundred forty)

Twitter announced that it has received another $35 million from investors. Messages posted to Twitter are called tweets and the maximum length of the tweet is 140 characters.

   MathBabbler Number Analyst (MBNA) output:
   =========================================
   140 is a natural, whole, integer
   140 is even
   140 proper divisors are: 1,2,4,5,7,10,14,20,28,35,70,
   140 is abundant (sum of divisors is 196)
   140 is unhappy
   140 is a Harshad number
   140 is not prime
   140 has the prime factors: 2*2*5*7
   140 in octal is 0214
   140 in hexadecimal is 0x8c
   140 in binary is 10001100 (is odious)
   140 nearest square numbers: -19...4 (121 [11]...144 [12])
   sqrt(140) = 11.8322
   ln(140) = 4.94164
   log(140) = 2.14613
   140 reciprocal is .00714285714285714285714285714285
   140! is 1.3462e+241
   140 is 44.5634 Pi years
   140 is 7 scoreyears
   140 written as a Roman numeral is CXL

[Wikipedia] 140 is a harmonic divisor number.

[Wikipedia] 140 is the sum of the squares of the first seven integers.

Update::2009.03.25

nBAB #140, which was about the number 45, was created on 25 March 2009.

Update::2015.02.10

BAB::MathBabbler is 140 Days Older Than MKNZ was posted on 10 February 2015 after MathBabbler discovered he was 140 days older than MKNZ. MathBabbler noticed that this nBAB for the number 140 was four days away from turing six years old, so updated MBNA was added to this nBAB.

140 is a natural, whole, integer
140 is even
140 proper divisors are: 1,2,4,5,7,10,14,20,28,35,70,
140 has 11 proper divisors
140 is abundant (sum of divisors is 196; ratio: 1.4)
140 is unhappy
140 is not a Squarefree Number: 4,
140 is Harshad (Niven) number
140 is composite (not prime)
140 has the prime factors: 2*2*5*7 (sum=16)
140 is Arithmetic (A003601)
140 is a harmonic (Ore) number
140 is not in A038853
140 in octal is 0214
140 in hexadecimal is 0x8c
140 in binary is 10001100 (is odious)
140 nearest square numbers: -19...4 (121...144 [12])
sqrt(140) = 11.8322
ln(140) = 4.94164
log(140) = 2.14613
140 reciprocal is .00714285714285714285714285714285
140! is 1.3462e+241
140 is 44.5634 Pi years
140 is 7 scoreyears
140 written as a Roman numeral is CXL
140 is 36^2 - 34^2 and 2 * (36 + 34)
140 is a multiple of 1 & it contains a 1 (A011531)
140 is a multiple of 4 & it contains a 4 (A121024)
140 is a multiple of 14 & it contains a 14 (A121034)

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 14 February 2009

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