131587642 has 8 divisors (see below), whose sum is σ = 198079776. Its totient is φ = 65561052.

The previous prime is 131587627. The next prime is 131587649. The reversal of 131587642 is 246785131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (131587649) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 115678 + ... + 116809.

It is an arithmetic number, because the mean of its divisors is an integer number (24759972).

Almost surely, 2^131587642 is an apocalyptic number.

131587642 is a deficient number, since it is larger than the sum of its proper divisors (66492134).

131587642 is a wasteful number, since it uses less digits than its factorization.

131587642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232772.

The product of its digits is 40320, while the sum is 37.

The square root of 131587642 is about 11471.1656774715. The cubic root of 131587642 is about 508.6335869689.

The spelling of 131587642 in words is "one hundred thirty-one million, five hundred eighty-seven thousand, six hundred forty-two".