142355131425521 has 16 divisors (see below), whose sum is σ = 162761844693888. Its totient is φ = 121965988214400.

The previous prime is 142355131425511. The next prime is 142355131425541. The reversal of 142355131425521 is 125524131553241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142355131425521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142355131425511) 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, 536568461 + ... + 536833701.

It is an arithmetic number, because the mean of its divisors is an integer number (10172615293368).

Almost surely, 2^{142355131425521} is an apocalyptic number.

It is an amenable number.

142355131425521 is a deficient number, since it is larger than the sum of its proper divisors (20406713268367).

142355131425521 is a wasteful number, since it uses less digits than its factorization.

142355131425521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298072.

The product of its digits is 720000, while the sum is 44.

Adding to 142355131425521 its reverse (125524131553241), we get a palindrome (267879262978762).

The spelling of 142355131425521 in words is "one hundred forty-two trillion, three hundred fifty-five billion, one hundred thirty-one million, four hundred twenty-five thousand, five hundred twenty-one".