420630456 has 32 divisors (see below), whose sum is σ = 1113434640. Its totient is φ = 131962368.

The previous prime is 420630451. The next prime is 420630461. The reversal of 420630456 is 654036024.

It is an interprime number because it is at equal distance from previous prime (420630451) and next prime (420630461).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420630451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515071 + ... + 515886.

Almost surely, 2^420630456 is an apocalyptic number.

It is an amenable number.

420630456 is an abundant number, since it is smaller than the sum of its proper divisors (692804184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420630456 is a wasteful number, since it uses less digits than its factorization.

420630456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030983 (or 1030979 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 420630456 is about 20509.2773154005. The cubic root of 420630456 is about 749.2617660303.

The spelling of 420630456 in words is "four hundred twenty million, six hundred thirty thousand, four hundred fifty-six".