421304372 has 6 divisors (see below), whose sum is σ = 737282658. Its totient is φ = 210652184.

The previous prime is 421304357. The next prime is 421304437. The reversal of 421304372 is 273403124.

It can be written as a sum of positive squares in only one way, i.e., 419676196 + 1628176 = 20486^2 + 1276^2 .

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, 52663043 + ... + 52663050.

It is an arithmetic number, because the mean of its divisors is an integer number (122880443).

Almost surely, 2^421304372 is an apocalyptic number.

It is an amenable number.

421304372 is a deficient number, since it is larger than the sum of its proper divisors (315978286).

421304372 is a wasteful number, since it uses less digits than its factorization.

421304372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105326097 (or 105326095 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 421304372 is about 20525.7002803802. The cubic root of 421304372 is about 749.6616974989.

Adding to 421304372 its reverse (273403124), we get a palindrome (694707496).

The spelling of 421304372 in words is "four hundred twenty-one million, three hundred four thousand, three hundred seventy-two".