402620124 has 12 divisors (see below), whose sum is σ = 939446984. Its totient is φ = 134206704.

The previous prime is 402620111. The next prime is 402620177. The reversal of 402620124 is 421026204.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 402620124.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16775827 + ... + 16775850.

Almost surely, 2^402620124 is an apocalyptic number.

It is an amenable number.

402620124 is an abundant number, since it is smaller than the sum of its proper divisors (536826860).

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

402620124 is a wasteful number, since it uses less digits than its factorization.

402620124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33551684 (or 33551682 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 402620124 is about 20065.3961834797. The cubic root of 402620124 is about 738.4115696992.

Adding to 402620124 its reverse (421026204), we get a palindrome (823646328).

The spelling of 402620124 in words is "four hundred two million, six hundred twenty thousand, one hundred twenty-four".