402540522432 has 28 divisors (see below), whose sum is σ = 1065055132776. Its totient is φ = 134180174080.

The previous prime is 402540522367. The next prime is 402540522487. The reversal of 402540522432 is 234225045204.

402540522432 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 402540522393 and 402540522402.

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, 1048282419 + ... + 1048282802.

Almost surely, 2^402540522432 is an apocalyptic number.

It is an amenable number.

402540522432 is an abundant number, since it is smaller than the sum of its proper divisors (662514610344).

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

402540522432 is a wasteful number, since it uses less digits than its factorization.

402540522432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096565236 (or 2096565226 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 33.

Adding to 402540522432 its reverse (234225045204), we get a palindrome (636765567636).

The spelling of 402540522432 in words is "four hundred two billion, five hundred forty million, five hundred twenty-two thousand, four hundred thirty-two".