421534804 has 12 divisors (see below), whose sum is σ = 737919028. Its totient is φ = 210700800.

The previous prime is 421534801. The next prime is 421534819. The reversal of 421534804 is 408435124.

It can be written as a sum of positive squares in 2 ways, for example, as 116683204 + 304851600 = 10802^2 + 17460^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421534801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717 + ... + 29044.

Almost surely, 2^421534804 is an apocalyptic number.

It is an amenable number.

421534804 is a deficient number, since it is larger than the sum of its proper divisors (316384224).

421534804 is a wasteful number, since it uses less digits than its factorization.

421534804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33306 (or 33304 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 421534804 is about 20531.3127685494. The cubic root of 421534804 is about 749.7983481573.

Adding to 421534804 its reverse (408435124), we get a palindrome (829969928).

The spelling of 421534804 in words is "four hundred twenty-one million, five hundred thirty-four thousand, eight hundred four".