### About the Number 4,145 (four thousand one hundred forty-five)

The BAB count was 4145 at the start of the Spring 2015 Semester. This nBAB about the number 4145 was BAB# 4147.

```MathBabbler Number Analyst (MBNA) output:
=========================================
4145 is a natural, whole, integer
4145 is odd
4145 proper divisors are: 1,5,829,
4145 has 3 proper divisors
4145 is deficient (sum of divisors is 835; ratio: 0.201448)
4145 is unhappy
4145 is a Squarefree Number
4145 is composite (not prime)
4145 has the prime factors: 5*829 (sum=834)
4145 is semiprime (biprime or 2-almost prime)
4145 is Arithmetic (A003601)
4145 is the sum of 9 consecutive primes
4145 = 439 + 443 + 449 + 457 + 461 + 463 + 467 + 479 + 487
4145 is not in A038853
4145 in octal is 010061
4145 in hexadecimal is 0x1031
4145 in binary is 1000000110001 (is evil)
4145 nearest square numbers: -49...80 (4096...4225 )
sqrt(4145) = 64.3817
ln(4145) = 8.32966
log(4145) = 3.61752
4145 reciprocal is .00024125452352231604342581423401
4145 is an apocalyptic power
4145! is inf
4145 is 1319.39 Pi years
4145 is 207 score and 5 years
4145 is 2073^2 - 2072^2 and 2073 + 2072 = 4145
4145 is a multiple of 1 & it contains a 1 (A011531)
4145 is a multiple of 5 & it contains a 5 (A121025)
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 12 January 2015 