402440404024 has 16 divisors (see below), whose sum is σ = 794290271400. Its totient is φ = 190629664992.

The previous prime is 402440404007. The next prime is 402440404073. The reversal of 402440404024 is 420404044204.

It is a junction number, because it is equal to n+sod(n) for n = 402440403983 and 402440404001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1323816967 + ... + 1323817270.

Almost surely, 2^402440404024 is an apocalyptic number.

It is an amenable number.

402440404024 is a deficient number, since it is larger than the sum of its proper divisors (391849867376).

402440404024 is a wasteful number, since it uses less digits than its factorization.

402440404024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647634262 (or 2647634258 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 402440404024 its reverse (420404044204), we get a palindrome (822844448228).

The spelling of 402440404024 in words is "four hundred two billion, four hundred forty million, four hundred four thousand, twenty-four".