402143504 has 20 divisors (see below), whose sum is σ = 890460864. Its totient is φ = 172347168.

The previous prime is 402143479. The next prime is 402143513. The reversal of 402143504 is 405341204.

It is a self number, because there is not a number n which added to its sum of digits gives 402143504.

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, 1795172 + ... + 1795395.

Almost surely, 2^402143504 is an apocalyptic number.

It is an amenable number.

402143504 is an abundant number, since it is smaller than the sum of its proper divisors (488317360).

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

402143504 is a wasteful number, since it uses less digits than its factorization.

402143504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590582 (or 3590576 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 402143504 is about 20053.5160009411. The cubic root of 402143504 is about 738.1200784824.

Adding to 402143504 its reverse (405341204), we get a palindrome (807484708).

The spelling of 402143504 in words is "four hundred two million, one hundred forty-three thousand, five hundred four".