402371144 has 24 divisors (see below), whose sum is σ = 877621590. Its totient is φ = 172444608.

The previous prime is 402371119. The next prime is 402371159. The reversal of 402371144 is 441173204.

It can be written as a sum of positive squares in only one way, i.e., 375972100 + 26399044 = 19390^2 + 5138^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 512837 + ... + 513620.

Almost surely, 2^402371144 is an apocalyptic number.

It is an amenable number.

402371144 is an abundant number, since it is smaller than the sum of its proper divisors (475250446).

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

402371144 is a wasteful number, since it uses less digits than its factorization.

402371144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026477 (or 1026466 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 402371144 is about 20059.1910106066. The cubic root of 402371144 is about 738.2593272484.

The spelling of 402371144 in words is "four hundred two million, three hundred seventy-one thousand, one hundred forty-four".