131242790 has 32 divisors (see below), whose sum is σ = 273798144. Its totient is φ = 44362080.

The previous prime is 131242789. The next prime is 131242799. The reversal of 131242790 is 97242131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131242799) 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, 8234 + ... + 18173.

It is an arithmetic number, because the mean of its divisors is an integer number (8556192).

Almost surely, 2^131242790 is an apocalyptic number.

131242790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131242790 is an abundant number, since it is smaller than the sum of its proper divisors (142555354).

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

131242790 is a wasteful number, since it uses less digits than its factorization.

131242790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26492.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 131242790 is about 11456.1245628703. The cubic root of 131242790 is about 508.1888725637.

The spelling of 131242790 in words is "one hundred thirty-one million, two hundred forty-two thousand, seven hundred ninety".