131407642 has 16 divisors (see below), whose sum is σ = 204508800. Its totient is φ = 63251440.

The previous prime is 131407631. The next prime is 131407657. The reversal of 131407642 is 246704131.

It is a self number, because there is not a number n which added to its sum of digits gives 131407642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17667 + ... + 23977.

It is an arithmetic number, because the mean of its divisors is an integer number (12781800).

Almost surely, 2^131407642 is an apocalyptic number.

131407642 is a deficient number, since it is larger than the sum of its proper divisors (73101158).

131407642 is a wasteful number, since it uses less digits than its factorization.

131407642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6701.

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

The square root of 131407642 is about 11463.3172336807. The cubic root of 131407642 is about 508.4015595487.

The spelling of 131407642 in words is "one hundred thirty-one million, four hundred seven thousand, six hundred forty-two".