420166972 has 12 divisors (see below), whose sum is σ = 738223416. Its totient is φ = 209246000.

The previous prime is 420166961. The next prime is 420167017. The reversal of 420166972 is 279661024.

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, 208243 + ... + 210250.

It is an arithmetic number, because the mean of its divisors is an integer number (61518618).

Almost surely, 2^420166972 is an apocalyptic number.

It is an amenable number.

420166972 is a deficient number, since it is larger than the sum of its proper divisors (318056444).

420166972 is a wasteful number, since it uses less digits than its factorization.

420166972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418748 (or 418746 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 420166972 is about 20497.9748267969. The cubic root of 420166972 is about 748.9864662086.

The spelling of 420166972 in words is "four hundred twenty million, one hundred sixty-six thousand, nine hundred seventy-two".