402242406 has 64 divisors (see below), whose sum is σ = 877754880. Its totient is φ = 122411520.

The previous prime is 402242363. The next prime is 402242417. The reversal of 402242406 is 604242204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 484800 + ... + 485628.

It is an arithmetic number, because the mean of its divisors is an integer number (13714920).

Almost surely, 2^402242406 is an apocalyptic number.

402242406 is an abundant number, since it is smaller than the sum of its proper divisors (475512474).

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

402242406 is a wasteful number, since it uses less digits than its factorization.

402242406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 402242406 is about 20055.9818009491. The cubic root of 402242406 is about 738.1805838887.

The spelling of 402242406 in words is "four hundred two million, two hundred forty-two thousand, four hundred six".