131740642 has 64 divisors (see below), whose sum is σ = 241367040. Its totient is φ = 53222400.

The previous prime is 131740639. The next prime is 131740657. The reversal of 131740642 is 246047131.

It is a self number, because there is not a number n which added to its sum of digits gives 131740642.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 682498 + ... + 682690.

It is an arithmetic number, because the mean of its divisors is an integer number (3771360).

Almost surely, 2^131740642 is an apocalyptic number.

131740642 is a deficient number, since it is larger than the sum of its proper divisors (109626398).

131740642 is a wasteful number, since it uses less digits than its factorization.

131740642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 131740642 is about 11477.8326351276. The cubic root of 131740642 is about 508.8306439662.

Adding to 131740642 its reverse (246047131), we get a palindrome (377787773).

The spelling of 131740642 in words is "one hundred thirty-one million, seven hundred forty thousand, six hundred forty-two".