420387930 has 48 divisors (see below), whose sum is σ = 1103061960. Its totient is φ = 111072384.

The previous prime is 420387899. The next prime is 420387941. The reversal of 420387930 is 39783024.

It can be written as a sum of positive squares in 4 ways, for example, as 420209001 + 178929 = 20499^2 + 423^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11617 + ... + 31236.

Almost surely, 2^420387930 is an apocalyptic number.

420387930 is an abundant number, since it is smaller than the sum of its proper divisors (682674030).

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

420387930 is a wasteful number, since it uses less digits than its factorization.

420387930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42975 (or 42972 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 420387930 is about 20503.3638703506. The cubic root of 420387930 is about 749.1177358870.

The spelling of 420387930 in words is "four hundred twenty million, three hundred eighty-seven thousand, nine hundred thirty".