131785242 has 32 divisors (see below), whose sum is σ = 271833408. Its totient is φ = 42571776.

The previous prime is 131785219. The next prime is 131785259. The reversal of 131785242 is 242587131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23898 + ... + 28890.

It is an arithmetic number, because the mean of its divisors is an integer number (8494794).

Almost surely, 2^131785242 is an apocalyptic number.

131785242 is an abundant number, since it is smaller than the sum of its proper divisors (140048166).

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

131785242 is a wasteful number, since it uses less digits than its factorization.

131785242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5134.

The product of its digits is 13440, while the sum is 33.

The square root of 131785242 is about 11479.7753462339. The cubic root of 131785242 is about 508.8880580032. Note that the first 3 decimals are identical.

The spelling of 131785242 in words is "one hundred thirty-one million, seven hundred eighty-five thousand, two hundred forty-two".