402070571 has 32 divisors (see below), whose sum is σ = 498769920. Its totient is φ = 316461600.

The previous prime is 402070549. The next prime is 402070637. The reversal of 402070571 is 175070204.

It is not a de Polignac number, because 402070571 - 2²² = 397876267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402070571.

It is not an unprimeable number, because it can be changed into a prime (402070541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 818636 + ... + 819126.

It is an arithmetic number, because the mean of its divisors is an integer number (15586560).

Almost surely, 2^402070571 is an apocalyptic number.

402070571 is a deficient number, since it is larger than the sum of its proper divisors (96699349).

402070571 is a wasteful number, since it uses less digits than its factorization.

402070571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 402070571 is about 20051.6974593175. The cubic root of 402070571 is about 738.0754538100.

The spelling of 402070571 in words is "four hundred two million, seventy thousand, five hundred seventy-one".