402040382020 has 24 divisors (see below), whose sum is σ = 844312097664. Its totient is φ = 160810953696.

The previous prime is 402040381987. The next prime is 402040382089. The reversal of 402040382020 is 20283040204.

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, 342597 + ... + 959923.

It is an arithmetic number, because the mean of its divisors is an integer number (35179670736).

Almost surely, 2^402040382020 is an apocalyptic number.

It is an amenable number.

402040382020 is an abundant number, since it is smaller than the sum of its proper divisors (442271715644).

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

402040382020 is a wasteful number, since it uses less digits than its factorization.

402040382020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649899 (or 649897 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The spelling of 402040382020 in words is "four hundred two billion, forty million, three hundred eighty-two thousand, twenty".