131889942 has 12 divisors (see below), whose sum is σ = 285761580. Its totient is φ = 43963308.

The previous prime is 131889937. The next prime is 131889971. The reversal of 131889942 is 249988131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3663592 + ... + 3663627.

It is an arithmetic number, because the mean of its divisors is an integer number (23813465).

Almost surely, 2^131889942 is an apocalyptic number.

131889942 is an abundant number, since it is smaller than the sum of its proper divisors (153871638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131889942 is a wasteful number, since it uses less digits than its factorization.

131889942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7327227 (or 7327224 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 131889942 is about 11484.3346346229. The cubic root of 131889942 is about 509.0227885063.

The spelling of 131889942 in words is "one hundred thirty-one million, eight hundred eighty-nine thousand, nine hundred forty-two".