### About the Number 4205 (four thousand two hundred five)

The BABs search engine is FreeFind.com. MathBabbler received the following email message from FreeFind.com on 1 January 2012.

```   Your site has been spidered.

Our search engine has finished indexing your site:
Site URL        : http://shell.deru.com/gdt/babs
```

It was the first time more than 4200 pages were read.

```   MathBabbler Number Analyst (MBNA) output:
=========================================
4205 is a natural, whole, integer
4205 is odd
4205 proper divisors are: 1,5,29,145,841,
4205 is deficient (sum of divisors is 1021)
4205 is unhappy
4205 is not a Squarefree Number: 841,
4205 is not a Harshad number
4205 is not prime
4205 has the prime factors: 5*29*29 (sum=63)
4205 sum of prime factors is: 63
4205 in octal is 010155
4205 in binary is 1000001101101 (is evil)
4205 nearest square numbers: -109...20 (4096...4225 [65])
sqrt(4205) = 64.846
ln(4205) = 8.34403
log(4205) = 3.62377
4205 reciprocal is .00023781212841854934601664684898
4205! is inf
4205 is 1338.49 Pi years
4205 is 210 score and 5 years
4205 = 2103^2 - 2102^2 and 2103 + 2102 = 4205
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 02 January 2012