402431441402404 has 12 divisors (see below), whose sum is σ = 704269495473628. Its totient is φ = 201211585552800.

The previous prime is 402431441402323. The next prime is 402431441402413. The reversal of 402431441402404 is 404204144134204.

It can be written as a sum of positive squares in 2 ways, for example, as 181164923901504 + 221266517500900 = 13459752^2 + 14875030^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1033568127 + ... + 1033957414.

Almost surely, 2^{402431441402404} is an apocalyptic number.

It is an amenable number.

402431441402404 is a deficient number, since it is larger than the sum of its proper divisors (301838054071224).

402431441402404 is a wasteful number, since it uses less digits than its factorization.

402431441402404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067574206 (or 2067574204 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 37.

Adding to 402431441402404 its reverse (404204144134204), we get a palindrome (806635585536608).

The spelling of 402431441402404 in words is "four hundred two trillion, four hundred thirty-one billion, four hundred forty-one million, four hundred two thousand, four hundred four".