431725138542 has 40 divisors (see below), whose sum is σ = 972245406000. Its totient is φ = 143185211136.

The previous prime is 431725138513. The next prime is 431725138571. The reversal of 431725138542 is 245831527134.

431725138542 is a `hidden beast` number, since 4 + 3 + 1 + 72 + 5 + 1 + 38 + 542 = 666.

It is an interprime number because it is at equal distance from previous prime (431725138513) and next prime (431725138571).

It is a super-3 number, since 3×431725138542³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6663667 + ... + 6728142.

It is an arithmetic number, because the mean of its divisors is an integer number (24306135150).

Almost surely, 2^431725138542 is an apocalyptic number.

431725138542 is an abundant number, since it is smaller than the sum of its proper divisors (540520267458).

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

431725138542 is a wasteful number, since it uses less digits than its factorization.

431725138542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13392022 (or 13392013 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 431725138542 in words is "four hundred thirty-one billion, seven hundred twenty-five million, one hundred thirty-eight thousand, five hundred forty-two".