131842 has 4 divisors (see below), whose sum is σ = 197766. Its totient is φ = 65920.

The previous prime is 131839. The next prime is 131849. The reversal of 131842 is 248131.

131842 is nontrivially palindromic in base 4 and base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248131 = 13 ⋅19087.

It can be written as a sum of positive squares in only one way, i.e., 130321 + 1521 = 361^2 + 39^2 .

It is a pancake number, because a pancake can be divided into 131842 parts by 513 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (131849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32959 + ... + 32962.

2¹³¹⁸⁴² is an apocalyptic number.

131842 is a deficient number, since it is larger than the sum of its proper divisors (65924).

131842 is an equidigital number, since it uses as much as digits as its factorization.

131842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65923.

The product of its digits is 192, while the sum is 19.

The square root of 131842 is about 363.1005370417. The cubic root of 131842 is about 50.8961104429.

Adding to 131842 its reverse (248131), we get a palindrome (379973).

The spelling of 131842 in words is "one hundred thirty-one thousand, eight hundred forty-two".