About the Number 135 (one hundred thirty-five)

A program to check for sum-product numbers was added to the MBNA. There are only four sum-products: 0, 1, `135` and 144. nBABs existed for 0, 1, 144 and now there is a nBAB for `135`.

```   MathBabbler Number Analyst (MBNA) output:
=========================================
135 is a natural, whole, integer
135 is odd
135 proper divisors are: 1,3,5,9,15,27,45,
135 is deficient (sum of divisors is 105)
135 is unhappy
135 is not prime
135 has the prime factors: 3*3*3*5 (sum=14)
135 sum of prime factors is: 14
135 is a lucky number
135 is a sum-product number
135 in octal is 0207
135 in binary is 10000111 (is evil)
135 nearest square numbers: -14...9 (121...144 [12])
sqrt(135) = 11.619
ln(135) = 4.90527
log(135) = 2.13033
135 reciprocal is .00740740740740740740740740740740
135! is 2.69047e+230
135 is 42.9718 Pi years
135 is 6 score and 15 years
135 written as a Roman numeral is CXXXV
```

`[Wikipedia]` `135` "equals the sum of consecutive powers of its digits. (175, 518, and 598 also have this property)."

```   135 = 1^1 + 3^2 + 5^3
```

`[Wikipedia]` MathBabbler hasn't confirmed this, but the Wikipedia claims there are `135` prime numbers between 1000 and 2000.

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 09 May 2009