142102113531 has 32 divisors (see below), whose sum is σ = 225068379648. Its totient is φ = 78054658560.

The previous prime is 142102113521. The next prime is 142102113551. The reversal of 142102113531 is 135311201241.

It is not a de Polignac number, because 142102113531 - 2⁵ = 142102113499 is a prime.

It is a super-2 number, since 2×142102113531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142102113521) 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, 1037230 + ... + 1166211.

It is an arithmetic number, because the mean of its divisors is an integer number (7033386864).

Almost surely, 2^142102113531 is an apocalyptic number.

142102113531 is a deficient number, since it is larger than the sum of its proper divisors (82966266117).

142102113531 is a wasteful number, since it uses less digits than its factorization.

142102113531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203571.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 142102113531 its reverse (135311201241), we get a palindrome (277413314772).

The spelling of 142102113531 in words is "one hundred forty-two billion, one hundred two million, one hundred thirteen thousand, five hundred thirty-one".