404242332431 has 24 divisors (see below), whose sum is σ = 480233376720. Its totient is φ = 339207792000.

The previous prime is 404242332421. The next prime is 404242332433. The reversal of 404242332431 is 134233242404.

It is a de Polignac number, because none of the positive numbers 2^k-404242332431 is a prime.

It is a super-2 number, since 2×404242332431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404242332433) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 18425 + ... + 899346.

It is an arithmetic number, because the mean of its divisors is an integer number (20009724030).

Almost surely, 2^404242332431 is an apocalyptic number.

404242332431 is a deficient number, since it is larger than the sum of its proper divisors (75991044289).

404242332431 is a wasteful number, since it uses less digits than its factorization.

404242332431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917975 (or 917968 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 404242332431 its reverse (134233242404), we get a palindrome (538475574835).

The spelling of 404242332431 in words is "four hundred four billion, two hundred forty-two million, three hundred thirty-two thousand, four hundred thirty-one".