402372671 has 4 divisors (see below), whose sum is σ = 423550200. Its totient is φ = 381195144.

The previous prime is 402372667. The next prime is 402372679. The reversal of 402372671 is 176273204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402372671 - 2² = 402372667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402372679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10588736 + ... + 10588773.

It is an arithmetic number, because the mean of its divisors is an integer number (105887550).

Almost surely, 2^402372671 is an apocalyptic number.

402372671 is a deficient number, since it is larger than the sum of its proper divisors (21177529).

402372671 is a wasteful number, since it uses less digits than its factorization.

402372671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21177528.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 402372671 is about 20059.2290729230. The cubic root of 402372671 is about 738.2602611462.

The spelling of 402372671 in words is "four hundred two million, three hundred seventy-two thousand, six hundred seventy-one".