402400430056 has 32 divisors (see below), whose sum is σ = 799056037440. Its totient is φ = 189579950208.

The previous prime is 402400430053. The next prime is 402400430059. The reversal of 402400430056 is 650034004204.

It is an interprime number because it is at equal distance from previous prime (402400430053) and next prime (402400430059).

It is a super-2 number, since 2×402400430056² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402400430053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16308261 + ... + 16332916.

It is an arithmetic number, because the mean of its divisors is an integer number (24970501170).

Almost surely, 2^402400430056 is an apocalyptic number.

402400430056 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

402400430056 is a deficient number, since it is larger than the sum of its proper divisors (396655607384).

402400430056 is a wasteful number, since it uses less digits than its factorization.

402400430056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32641273 (or 32641269 counting only the distinct ones).

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

The spelling of 402400430056 in words is "four hundred two billion, four hundred million, four hundred thirty thousand, fifty-six".