131544142 has 4 divisors (see below), whose sum is σ = 197316216. Its totient is φ = 65772070.

The previous prime is 131544137. The next prime is 131544151. The reversal of 131544142 is 241445131.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×131544142² = 34607722589032328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32886034 + ... + 32886037.

It is an arithmetic number, because the mean of its divisors is an integer number (49329054).

Almost surely, 2^131544142 is an apocalyptic number.

131544142 is a deficient number, since it is larger than the sum of its proper divisors (65772074).

131544142 is an equidigital number, since it uses as much as digits as its factorization.

131544142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65772073.

The product of its digits is 1920, while the sum is 25.

The square root of 131544142 is about 11469.2694623503. The cubic root of 131544142 is about 508.5775330740.

Adding to 131544142 its reverse (241445131), we get a palindrome (372989273).

The spelling of 131544142 in words is "one hundred thirty-one million, five hundred forty-four thousand, one hundred forty-two".