131045242 has 16 divisors (see below), whose sum is σ = 207156960. Its totient is φ = 62001072.

The previous prime is 131045221. The next prime is 131045303. The reversal of 131045242 is 242540131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44673 + ... + 47515.

It is an arithmetic number, because the mean of its divisors is an integer number (12947310).

Almost surely, 2^131045242 is an apocalyptic number.

131045242 is a deficient number, since it is larger than the sum of its proper divisors (76111718).

131045242 is a wasteful number, since it uses less digits than its factorization.

131045242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 131045242 is about 11447.4993775933. The cubic root of 131045242 is about 507.9337674826.

Adding to 131045242 its reverse (242540131), we get a palindrome (373585373).

The spelling of 131045242 in words is "one hundred thirty-one million, forty-five thousand, two hundred forty-two".