421381372 has 12 divisors (see below), whose sum is σ = 746302536. Its totient is φ = 208152080.

The previous prime is 421381361. The next prime is 421381391. The reversal of 421381372 is 273183124.

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, 634279 + ... + 634942.

It is an arithmetic number, because the mean of its divisors is an integer number (62191878).

Almost surely, 2^421381372 is an apocalyptic number.

It is an amenable number.

421381372 is a deficient number, since it is larger than the sum of its proper divisors (324921164).

421381372 is a wasteful number, since it uses less digits than its factorization.

421381372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269308 (or 1269306 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 421381372 is about 20527.5758919557. The cubic root of 421381372 is about 749.7073655386.

It can be divided in two parts, 4 and 21381372, that added together give a 4-th power (21381376 = 68⁴).

The spelling of 421381372 in words is "four hundred twenty-one million, three hundred eighty-one thousand, three hundred seventy-two".