142321163442531 has 16 divisors (see below), whose sum is σ = 190839911654304. Its totient is φ = 94342176762624.

The previous prime is 142321163442439. The next prime is 142321163442569. The reversal of 142321163442531 is 135244361123241.

It is not a de Polignac number, because 142321163442531 - 2²³ = 142321155053923 is a prime.

It is a super-2 number, since 2×142321163442531² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142321163462531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71686420 + ... + 73644993.

It is an arithmetic number, because the mean of its divisors is an integer number (11927494478394).

Almost surely, 2^{142321163442531} is an apocalyptic number.

142321163442531 is a deficient number, since it is larger than the sum of its proper divisors (48518748211773).

142321163442531 is a wasteful number, since it uses less digits than its factorization.

142321163442531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145333270.

The product of its digits is 414720, while the sum is 42.

The spelling of 142321163442531 in words is "one hundred forty-two trillion, three hundred twenty-one billion, one hundred sixty-three million, four hundred forty-two thousand, five hundred thirty-one".