121593904 has 20 divisors (see below), whose sum is σ = 243188800. Its totient is φ = 58835520.

The previous prime is 121593889. The next prime is 121593907. The reversal of 121593904 is 409395121.

121593904 is an admirable number.

It is a super-2 number, since 2×121593904² = 29570154979922432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121593904.

It is not an unprimeable number, because it can be changed into a prime (121593907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122079 + ... + 123070.

It is an arithmetic number, because the mean of its divisors is an integer number (12159440).

Almost surely, 2^121593904 is an apocalyptic number.

It is an amenable number.

121593904 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121593904 is a wasteful number, since it uses less digits than its factorization.

121593904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245188 (or 245182 counting only the distinct ones).

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

The square root of 121593904 is about 11026.9625917566. The cubic root of 121593904 is about 495.4166529024.

The spelling of 121593904 in words is "one hundred twenty-one million, five hundred ninety-three thousand, nine hundred four".