504121920 has 56 divisors (see below), whose sum is σ = 1600590144. Its totient is φ = 134432256.

The previous prime is 504121913. The next prime is 504121921. The reversal of 504121920 is 29121405.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (504121921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261604 + ... + 263523.

Almost surely, 2^504121920 is an apocalyptic number.

It is an amenable number.

504121920 is an abundant number, since it is smaller than the sum of its proper divisors (1096468224).

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

504121920 is a wasteful number, since it uses less digits than its factorization.

504121920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525147 (or 525137 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 504121920 is about 22452.6595306658. The cubic root of 504121920 is about 795.8756065980.

The spelling of 504121920 in words is "five hundred four million, one hundred twenty-one thousand, nine hundred twenty".