6402042356 has 24 divisors (see below), whose sum is σ = 11421194400. Its totient is φ = 3138910112.

The previous prime is 6402042347. The next prime is 6402042371. The reversal of 6402042356 is 6532402046.

It is a super-2 number, since 2×6402042356² = 81972292656036061472, which contains 22 as substring.

It is a congruent number.

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, 437795 + ... + 452181.

It is an arithmetic number, because the mean of its divisors is an integer number (475883100).

Almost surely, 2^6402042356 is an apocalyptic number.

It is an amenable number.

6402042356 is a deficient number, since it is larger than the sum of its proper divisors (5019152044).

6402042356 is a wasteful number, since it uses less digits than its factorization.

6402042356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16543 (or 16541 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 6402042356 is about 80012.7637067987. The cubic root of 6402042356 is about 1856.8330077908.

The spelling of 6402042356 in words is "six billion, four hundred two million, forty-two thousand, three hundred fifty-six".