420492628 has 6 divisors (see below), whose sum is σ = 735862106. Its totient is φ = 210246312.

The previous prime is 420492623. The next prime is 420492641. The reversal of 420492628 is 826294024.

It can be written as a sum of positive squares in only one way, i.e., 403286724 + 17205904 = 20082^2 + 4148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420492623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52561575 + ... + 52561582.

Almost surely, 2^420492628 is an apocalyptic number.

It is an amenable number.

420492628 is a deficient number, since it is larger than the sum of its proper divisors (315369478).

420492628 is a wasteful number, since it uses less digits than its factorization.

420492628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105123161 (or 105123159 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 420492628 is about 20505.9169022017. The cubic root of 420492628 is about 749.1799202116.

The spelling of 420492628 in words is "four hundred twenty million, four hundred ninety-two thousand, six hundred twenty-eight".