421512004 has 12 divisors (see below), whose sum is σ = 739774224. Its totient is φ = 210147944.

The previous prime is 421511999. The next prime is 421512011. The reversal of 421512004 is 400215124.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150454 + ... + 153229.

It is an arithmetic number, because the mean of its divisors is an integer number (61647852).

Almost surely, 2^421512004 is an apocalyptic number.

It is an amenable number.

421512004 is a deficient number, since it is larger than the sum of its proper divisors (318262220).

421512004 is a wasteful number, since it uses less digits than its factorization.

421512004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304034 (or 304032 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 421512004 is about 20530.7575115971. The cubic root of 421512004 is about 749.7848295341.

Adding to 421512004 its reverse (400215124), we get a palindrome (821727128).

The spelling of 421512004 in words is "four hundred twenty-one million, five hundred twelve thousand, four".