431601240642 has 48 divisors (see below), whose sum is σ = 1021794695040. Its totient is φ = 120727617120.

The previous prime is 431601240619. The next prime is 431601240713. The reversal of 431601240642 is 246042106134.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 23 ways as a sum of consecutive naturals, for example, 22855642 + ... + 22874517.

It is an arithmetic number, because the mean of its divisors is an integer number (21287389480).

Almost surely, 2^431601240642 is an apocalyptic number.

431601240642 is an abundant number, since it is smaller than the sum of its proper divisors (590193454398).

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

431601240642 is a wasteful number, since it uses less digits than its factorization.

431601240642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45730199 (or 45730188 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 431601240642 its reverse (246042106134), we get a palindrome (677643346776).

The spelling of 431601240642 in words is "four hundred thirty-one billion, six hundred one million, two hundred forty thousand, six hundred forty-two".