121359904 has 24 divisors (see below), whose sum is σ = 240540300. Its totient is φ = 60270336.

The previous prime is 121359899. The next prime is 121359907. The reversal of 121359904 is 409953121.

It can be written as a sum of positive squares in 2 ways, for example, as 115347600 + 6012304 = 10740^2 + 2452^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121359904.

It is not an unprimeable number, because it can be changed into a prime (121359907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7959 + ... + 17494.

Almost surely, 2^121359904 is an apocalyptic number.

It is an amenable number.

121359904 is a deficient number, since it is larger than the sum of its proper divisors (119180396).

121359904 is a wasteful number, since it uses less digits than its factorization.

121359904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25612 (or 25604 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 121359904 is about 11016.3471259760. The cubic root of 121359904 is about 495.0986491821.

The spelling of 121359904 in words is "one hundred twenty-one million, three hundred fifty-nine thousand, nine hundred four".