402117136 has 10 divisors (see below), whose sum is σ = 779101982. Its totient is φ = 201058560.

The previous prime is 402117113. The next prime is 402117137. The reversal of 402117136 is 631711204.

It can be written as a sum of positive squares in only one way, i.e., 384944400 + 17172736 = 19620^2 + 4144^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402117136.

It is not an unprimeable number, because it can be changed into a prime (402117137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12566145 + ... + 12566176.

Almost surely, 2^402117136 is an apocalyptic number.

It is an amenable number.

402117136 is a deficient number, since it is larger than the sum of its proper divisors (376984846).

402117136 is a wasteful number, since it uses less digits than its factorization.

402117136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25132329 (or 25132323 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 402117136 is about 20052.8585493440. The cubic root of 402117136 is about 738.1039456215.

The spelling of 402117136 in words is "four hundred two million, one hundred seventeen thousand, one hundred thirty-six".