420732431406 has 48 divisors (see below), whose sum is σ = 1041874454400. Its totient is φ = 120202249104.

The previous prime is 420732431393. The next prime is 420732431419. The reversal of 420732431406 is 604134237024.

420732431406 is a `hidden beast` number, since 4 + 2 + 0 + 7 + 3 + 243 + 1 + 406 = 666.

It is an interprime number because it is at equal distance from previous prime (420732431393) and next prime (420732431419).

It is a Curzon number.

It is a congruent number.

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, 2303385 + ... + 2479323.

It is an arithmetic number, because the mean of its divisors is an integer number (21705717800).

Almost surely, 2^420732431406 is an apocalyptic number.

420732431406 is an abundant number, since it is smaller than the sum of its proper divisors (621142022994).

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

420732431406 is a wasteful number, since it uses less digits than its factorization.

420732431406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194933 (or 194930 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The spelling of 420732431406 in words is "four hundred twenty billion, seven hundred thirty-two million, four hundred thirty-one thousand, four hundred six".