420166994 has 16 divisors (see below), whose sum is σ = 700627200. Its totient is φ = 187667280.

The previous prime is 420166961. The next prime is 420167017. The reversal of 420166994 is 499661024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259844 + ... + 261455.

It is an arithmetic number, because the mean of its divisors is an integer number (43789200).

Almost surely, 2^420166994 is an apocalyptic number.

420166994 is a deficient number, since it is larger than the sum of its proper divisors (280460206).

420166994 is a wasteful number, since it uses less digits than its factorization.

420166994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521345.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 420166994 is about 20497.9753634353. The cubic root of 420166994 is about 748.9864792809.

The spelling of 420166994 in words is "four hundred twenty million, one hundred sixty-six thousand, nine hundred ninety-four".