About the Number 129 (one hundred twenty-nine)

This nBAB for the number 129 was created to complete the nBAB 120-129 interval. In addition, 129 was the smallest number that didn't have a nBAB. [After the posting of this nBAB, 130 became the smallest number not having a nBAB.]

   MathBabbler Number Analyst (MBNA) output:
   =========================================
   129 is a natural, whole, integer
   129 is odd
   129 proper divisors are: 1,3,43,
   129 is deficient (sum of divisors is 47)
   129 is happy
   129 is not a Harshad number
   129 is not prime
   129 has the prime factors: 3*43 (sum=46)
   129 is semiprime (biprime or 2-almost prime)
   129 sum of prime factors is: 46
   129 is a lucky number
   129 is the sum of 10 consecutive primes
       129=2+3+5+7+11+13+17+19+23+29
   129 in octal is 0201
   129 in hexadecimal is 0x81
   129 in binary is 10000001 (is evil)
   129 nearest square numbers: -8...15 (121...144 [12])
   sqrt(129) = 11.3578
   ln(129) = 4.85981
   log(129) = 2.11059
   129 reciprocal is .00775193798449612403100775193798
   129! is 4.9745e+217
   129 is 41.062 Pi years
   129 is 6 score and 9 years
   129 written as a Roman numeral is CXXIX

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 29 November 2009

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