402452131 has 4 divisors (see below), whose sum is σ = 404862192. Its totient is φ = 400042072.

The previous prime is 402452081. The next prime is 402452147. The reversal of 402452131 is 131254204.

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 402452131 - 2⁹ = 402451619 is a prime.

It is a super-2 number, since 2×402452131² = 323935435492882322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402452731) 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, 1204780 + ... + 1205113.

It is an arithmetic number, because the mean of its divisors is an integer number (101215548).

Almost surely, 2^402452131 is an apocalyptic number.

402452131 is a deficient number, since it is larger than the sum of its proper divisors (2410061).

402452131 is a wasteful number, since it uses less digits than its factorization.

402452131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410060.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 402452131 is about 20061.2096095923. The cubic root of 402452131 is about 738.3088548203.

The spelling of 402452131 in words is "four hundred two million, four hundred fifty-two thousand, one hundred thirty-one".