421504056 has 48 divisors (see below), whose sum is σ = 1201660200. Its totient is φ = 133106112.

The previous prime is 421504043. The next prime is 421504063. The reversal of 421504056 is 650405124.

It is a super-2 number, since 2×421504056² = 355331338448902272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152691 + ... + 155426.

Almost surely, 2^421504056 is an apocalyptic number.

It is an amenable number.

421504056 is an abundant number, since it is smaller than the sum of its proper divisors (780156144).

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

421504056 is a wasteful number, since it uses less digits than its factorization.

421504056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308148 (or 308141 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 421504056 is about 20530.5639474419. The cubic root of 421504056 is about 749.7801168748.

The spelling of 421504056 in words is "four hundred twenty-one million, five hundred four thousand, fifty-six".