402851023 has 16 divisors (see below), whose sum is σ = 431611200. Its totient is φ = 374685696.

The previous prime is 402850993. The next prime is 402851027. The reversal of 402851023 is 320158204.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402851023 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 (402851027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652611 + ... + 653227.

It is an arithmetic number, because the mean of its divisors is an integer number (26975700).

Almost surely, 2^402851023 is an apocalyptic number.

402851023 is a deficient number, since it is larger than the sum of its proper divisors (28760177).

402851023 is a wasteful number, since it uses less digits than its factorization.

402851023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 402851023 is about 20071.1490204223. The cubic root of 402851023 is about 738.5527001760.

The spelling of 402851023 in words is "four hundred two million, eight hundred fifty-one thousand, twenty-three".