117961245 has 16 divisors (see below), whose sum is σ = 209709120. Its totient is φ = 62912592.

The previous prime is 117961219. The next prime is 117961279. The reversal of 117961245 is 542169711.

It is not a de Polignac number, because 117961245 - 2⁵ = 117961213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436759 + ... + 437028.

It is an arithmetic number, because the mean of its divisors is an integer number (13106820).

Almost surely, 2^117961245 is an apocalyptic number.

117961245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117961245 is a deficient number, since it is larger than the sum of its proper divisors (91747875).

117961245 is an equidigital number, since it uses as much as digits as its factorization.

117961245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873801 (or 873795 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 117961245 is about 10860.9965012424. The cubic root of 117961245 is about 490.4331100511.

It can be divided in two parts, 11796 and 1245, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 117961245 in words is "one hundred seventeen million, nine hundred sixty-one thousand, two hundred forty-five".