421321304 has 16 divisors (see below), whose sum is σ = 790234920. Its totient is φ = 210592000.

The previous prime is 421321253. The next prime is 421321391. The reversal of 421321304 is 403123124.

It is a congruent number.

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, 25427 + ... + 38589.

Almost surely, 2^421321304 is an apocalyptic number.

It is an amenable number.

421321304 is a deficient number, since it is larger than the sum of its proper divisors (368913616).

421321304 is a wasteful number, since it uses less digits than its factorization.

421321304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17170 (or 17166 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 421321304 is about 20526.1127347581. The cubic root of 421321304 is about 749.6717402002.

Adding to 421321304 its reverse (403123124), we get a palindrome (824444428).

The spelling of 421321304 in words is "four hundred twenty-one million, three hundred twenty-one thousand, three hundred four".