402043564 has 18 divisors (see below), whose sum is σ = 761861940. Its totient is φ = 185558256.

The previous prime is 402043513. The next prime is 402043583. The reversal of 402043564 is 465340204.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 296694 + ... + 298045.

Almost surely, 2^402043564 is an apocalyptic number.

It is an amenable number.

402043564 is a deficient number, since it is larger than the sum of its proper divisors (359818376).

402043564 is a wasteful number, since it uses less digits than its factorization.

402043564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594769 (or 594754 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 402043564 is about 20051.0240137505. The cubic root of 402043564 is about 738.0589279797.

Adding to 402043564 its reverse (465340204), we get a palindrome (867383768).

It can be divided in two parts, 40204 and 3564, that multiplied together give a triangular number (143287056 = T₁₆₉₂₈).

The spelling of 402043564 in words is "four hundred two million, forty-three thousand, five hundred sixty-four".