131994242 has 16 divisors (see below), whose sum is σ = 199765440. Its totient is φ = 65408592.

The previous prime is 131994241. The next prime is 131994257. The reversal of 131994242 is 242499131.

It is not an unprimeable number, because it can be changed into a prime (131994241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179708 + ... + 180440.

It is an arithmetic number, because the mean of its divisors is an integer number (12485340).

Almost surely, 2^131994242 is an apocalyptic number.

131994242 is a deficient number, since it is larger than the sum of its proper divisors (67771198).

131994242 is a wasteful number, since it uses less digits than its factorization.

131994242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417.

The product of its digits is 15552, while the sum is 35.

The square root of 131994242 is about 11488.8747055575. The cubic root of 131994242 is about 509.1569334031.

The spelling of 131994242 in words is "one hundred thirty-one million, nine hundred ninety-four thousand, two hundred forty-two".