131442 has 16 divisors (see below), whose sum is σ = 276960. Its totient is φ = 41472.

The previous prime is 131441. The next prime is 131447. The reversal of 131442 is 244131.

131442 = T₁₀₈ + T₁₀₉ + ... + T₁₂₆.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 131442.

It is not an unprimeable number, because it can be changed into a prime (131441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463 + ... + 690.

It is an arithmetic number, because the mean of its divisors is an integer number (17310).

2¹³¹⁴⁴² is an apocalyptic number.

131442 is an abundant number, since it is smaller than the sum of its proper divisors (145518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131442 is a wasteful number, since it uses less digits than its factorization.

131442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177.

The product of its digits is 96, while the sum is 15.

The square root of 131442 is about 362.5493069915. The cubic root of 131442 is about 50.8445864782.

Adding to 131442 its reverse (244131), we get a palindrome (375573).

The spelling of 131442 in words is "one hundred thirty-one thousand, four hundred forty-two".