420420996 has 48 divisors (see below), whose sum is σ = 1093572480. Its totient is φ = 139678560.

The previous prime is 420420991. The next prime is 420421009. The reversal of 420420996 is 699024024.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 420420996.

It is not an unprimeable number, because it can be changed into a prime (420420991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27330 + ... + 39846.

It is an arithmetic number, because the mean of its divisors is an integer number (22782760).

Almost surely, 2^420420996 is an apocalyptic number.

It is an amenable number.

420420996 is an abundant number, since it is smaller than the sum of its proper divisors (673151484).

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

420420996 is a wasteful number, since it uses less digits than its factorization.

420420996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12841 (or 12833 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 420420996 is about 20504.1702099841. The cubic root of 420420996 is about 749.1373762207.

It can be divided in two parts, 4204 and 20996, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 420420996 in words is "four hundred twenty million, four hundred twenty thousand, nine hundred ninety-six".