121865924 has 48 divisors (see below), whose sum is σ = 232108800. Its totient is φ = 55800576.

The previous prime is 121865903. The next prime is 121865941. The reversal of 121865924 is 429568121.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 389192 + ... + 389504.

It is an arithmetic number, because the mean of its divisors is an integer number (4835600).

Almost surely, 2^121865924 is an apocalyptic number.

It is an amenable number.

121865924 is a deficient number, since it is larger than the sum of its proper divisors (110242876).

121865924 is a wasteful number, since it uses less digits than its factorization.

121865924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 490 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 121865924 is about 11039.2900134021. The cubic root of 121865924 is about 495.7858130450.

The spelling of 121865924 in words is "one hundred twenty-one million, eight hundred sixty-five thousand, nine hundred twenty-four".