420208504 has 16 divisors (see below), whose sum is σ = 800808120. Its totient is φ = 206659680.

The previous prime is 420208487. The next prime is 420208507. The reversal of 420208504 is 405802024.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420208507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430054 + ... + 431029.

Almost surely, 2^420208504 is an apocalyptic number.

It is an amenable number.

420208504 is a deficient number, since it is larger than the sum of its proper divisors (380599616).

420208504 is a wasteful number, since it uses less digits than its factorization.

420208504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861150 (or 861146 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 420208504 is about 20498.9878774539. The cubic root of 420208504 is about 749.0111436052.

The spelling of 420208504 in words is "four hundred twenty million, two hundred eight thousand, five hundred four".