421957164 has 48 divisors (see below), whose sum is σ = 1008000000. Its totient is φ = 137319936.

The previous prime is 421957141. The next prime is 421957171. The reversal of 421957164 is 461759124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337212 + ... + 338460.

It is an arithmetic number, because the mean of its divisors is an integer number (21000000).

Almost surely, 2^421957164 is an apocalyptic number.

It is an amenable number.

421957164 is an abundant number, since it is smaller than the sum of its proper divisors (586042836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421957164 is a wasteful number, since it uses less digits than its factorization.

421957164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902 (or 1900 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 421957164 is about 20541.5959457877. The cubic root of 421957164 is about 750.0486866172.

The spelling of 421957164 in words is "four hundred twenty-one million, nine hundred fifty-seven thousand, one hundred sixty-four".