117924121 has 16 divisors (see below), whose sum is σ = 147623040. Its totient is φ = 91848960.

The previous prime is 117924109. The next prime is 117924137. The reversal of 117924121 is 121429711.

It is not a de Polignac number, because 117924121 - 2²⁵ = 84369689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117924121.

It is not an unprimeable number, because it can be changed into a prime (117924101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13635 + ... + 20536.

It is an arithmetic number, because the mean of its divisors is an integer number (9226440).

Almost surely, 2^117924121 is an apocalyptic number.

It is an amenable number.

117924121 is a deficient number, since it is larger than the sum of its proper divisors (29698919).

117924121 is a wasteful number, since it uses less digits than its factorization.

117924121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34224.

The product of its digits is 1008, while the sum is 28.

The square root of 117924121 is about 10859.2873154733. The cubic root of 117924121 is about 490.3816560076.

The spelling of 117924121 in words is "one hundred seventeen million, nine hundred twenty-four thousand, one hundred twenty-one".