420840992 has 48 divisors (see below), whose sum is σ = 973389312. Its totient is φ = 176574720.

The previous prime is 420840989. The next prime is 420841019. The reversal of 420840992 is 299048024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41408 + ... + 50559.

It is an arithmetic number, because the mean of its divisors is an integer number (20278944).

Almost surely, 2^420840992 is an apocalyptic number.

It is an amenable number.

420840992 is an abundant number, since it is smaller than the sum of its proper divisors (552548320).

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

420840992 is a wasteful number, since it uses less digits than its factorization.

420840992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92001 (or 91993 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 420840992 is about 20514.4093748760. The cubic root of 420840992 is about 749.3867532264.

The spelling of 420840992 in words is "four hundred twenty million, eight hundred forty thousand, nine hundred ninety-two".