421232404 has 6 divisors (see below), whose sum is σ = 737156714. Its totient is φ = 210616200.

The previous prime is 421232381. The next prime is 421232437. The reversal of 421232404 is 404232124.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 410143504 + 11088900 = 20252^2 + 3330^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52654047 + ... + 52654054.

Almost surely, 2^421232404 is an apocalyptic number.

It is an amenable number.

421232404 is a deficient number, since it is larger than the sum of its proper divisors (315924310).

421232404 is a wasteful number, since it uses less digits than its factorization.

421232404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105308105 (or 105308103 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 421232404 is about 20523.9470862697. The cubic root of 421232404 is about 749.6190088641.

Adding to 421232404 its reverse (404232124), we get a palindrome (825464528).

The spelling of 421232404 in words is "four hundred twenty-one million, two hundred thirty-two thousand, four hundred four".