131423402042 has 24 divisors (see below), whose sum is σ = 203845856148. Its totient is φ = 63546260160.

The previous prime is 131423402027. The next prime is 131423402053. The reversal of 131423402042 is 240204324131.

It can be written as a sum of positive squares in 2 ways, for example, as 130855104121 + 568297921 = 361739^2 + 23839^2 .

It is a super-2 number, since 2×131423402042² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2730368 + ... + 2778084.

Almost surely, 2^131423402042 is an apocalyptic number.

131423402042 is a deficient number, since it is larger than the sum of its proper divisors (72422454106).

131423402042 is a wasteful number, since it uses less digits than its factorization.

131423402042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49214 (or 49183 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 131423402042 its reverse (240204324131), we get a palindrome (371627726173).

The spelling of 131423402042 in words is "one hundred thirty-one billion, four hundred twenty-three million, four hundred two thousand, forty-two".