142305426531 has 32 divisors (see below), whose sum is σ = 223287554880. Its totient is φ = 89264337408.

The previous prime is 142305426521. The next prime is 142305426547. The reversal of 142305426531 is 135624503241.

142305426531 is a `hidden beast` number, since 1 + 4 + 23 + 0 + 542 + 65 + 31 = 666.

It is not a de Polignac number, because 142305426531 - 2¹⁸ = 142305164387 is a prime.

It is a super-2 number, since 2×142305426531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142305426521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1645585 + ... + 1729901.

It is an arithmetic number, because the mean of its divisors is an integer number (6977736090).

Almost surely, 2^142305426531 is an apocalyptic number.

142305426531 is a deficient number, since it is larger than the sum of its proper divisors (80982128349).

142305426531 is a wasteful number, since it uses less digits than its factorization.

142305426531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88020 (or 88014 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 142305426531 its reverse (135624503241), we get a palindrome (277929929772).

The spelling of 142305426531 in words is "one hundred forty-two billion, three hundred five million, four hundred twenty-six thousand, five hundred thirty-one".