421339516 has 48 divisors (see below), whose sum is σ = 840448000. Its totient is φ = 183218112.

The previous prime is 421339481. The next prime is 421339517. The reversal of 421339516 is 615933124.

It is a super-2 number, since 2×421339516² = 355053975486228512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421339517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195541 + ... + 197683.

Almost surely, 2^421339516 is an apocalyptic number.

It is an amenable number.

421339516 is a deficient number, since it is larger than the sum of its proper divisors (419108484).

421339516 is a wasteful number, since it uses less digits than its factorization.

421339516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378 (or 2376 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 421339516 is about 20526.5563599938. The cubic root of 421339516 is about 749.6825417942.

The spelling of 421339516 in words is "four hundred twenty-one million, three hundred thirty-nine thousand, five hundred sixteen".