420189164 has 6 divisors (see below), whose sum is σ = 735331044. Its totient is φ = 210094580.

The previous prime is 420189157. The next prime is 420189173. The reversal of 420189164 is 461981024.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52523642 + ... + 52523649.

It is an arithmetic number, because the mean of its divisors is an integer number (122555174).

Almost surely, 2^420189164 is an apocalyptic number.

It is an amenable number.

420189164 is a deficient number, since it is larger than the sum of its proper divisors (315141880).

420189164 is a wasteful number, since it uses less digits than its factorization.

420189164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105047295 (or 105047293 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 420189164 is about 20498.5161414186. The cubic root of 420189164 is about 748.9996524069. Note that the first 3 decimals are identical.

The spelling of 420189164 in words is "four hundred twenty million, one hundred eighty-nine thousand, one hundred sixty-four".