### About the Number 120 (one hundred twenty)

This nBAB about the number `120` was BAB# `120` for the fall 2009 semester.

```   MathBabbler Number Analyst (MBNA) output:
=========================================
120 is a natural, whole, integer
120 is even
120 proper divisors are: 1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,
120 is abundant (sum of divisors is 240)
120 is unhappy
120 is a Harshad number
120 is not prime
120 has the prime factors: 2*2*2*3*5 (sum=14)
120 sum of prime factors is: 14
120 is triangular
120 in octal is 0170
120 in hexadecimal is 0x78
120 in binary is 1111000 (is evil)
120 nearest square numbers: -20...1 (100...121 )
sqrt(120) = 10.9545
ln(120) = 4.78749
log(120) = 2.07918
120 reciprocal is .00833333333333333333333333333333
120! is 6.6895e+198
120 is 38.1972 Pi years
120 is 6 scoreyears
120 written as a Roman numeral is CXX
```

`1209` is repdigit number 99.

`120` is 5! (5 factorial).

`[Wikipedia.org]` `120` is the "sum of a twin prime pair (59 + 61) and its the sume of four consecutive powers of 2 (8+16+32+64) and its the sum of four consecutive powers of 3 (3 + 9 + 27 + 81)."

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 18 November 2009 