131292442 has 8 divisors (see below), whose sum is σ = 197126100. Its totient is φ = 65583744.

The previous prime is 131292433. The next prime is 131292449. The reversal of 131292442 is 244292131.

It can be written as a sum of positive squares in 2 ways, for example, as 120143521 + 11148921 = 10961^2 + 3339^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 131292442.

It is not an unprimeable number, because it can be changed into a prime (131292449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28567 + ... + 32842.

Almost surely, 2^131292442 is an apocalyptic number.

131292442 is a deficient number, since it is larger than the sum of its proper divisors (65833658).

131292442 is a wasteful number, since it uses less digits than its factorization.

131292442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62480.

The product of its digits is 3456, while the sum is 28.

The square root of 131292442 is about 11458.2914084081. The cubic root of 131292442 is about 508.2529507823.

The spelling of 131292442 in words is "one hundred thirty-one million, two hundred ninety-two thousand, four hundred forty-two".