402042131204 has 24 divisors (see below), whose sum is σ = 804127867200. Its totient is φ = 172294426656.

The previous prime is 402042131189. The next prime is 402042131221. The reversal of 402042131204 is 402131240204.

It is a self number, because there is not a number n which added to its sum of digits gives 402042131204.

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 7 ways as a sum of consecutive naturals, for example, 149294 + ... + 909050.

It is an arithmetic number, because the mean of its divisors is an integer number (33505327800).

Almost surely, 2^402042131204 is an apocalyptic number.

It is an amenable number.

402042131204 is an abundant number, since it is smaller than the sum of its proper divisors (402085735996).

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

402042131204 is a wasteful number, since it uses less digits than its factorization.

402042131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778667 (or 778665 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 402042131204 its reverse (402131240204), we get a palindrome (804173371408).

The spelling of 402042131204 in words is "four hundred two billion, forty-two million, one hundred thirty-one thousand, two hundred four".