131542 has 8 divisors (see below), whose sum is σ = 199800. Its totient is φ = 64944.

The previous prime is 131519. The next prime is 131543. The reversal of 131542 is 245131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131543) by changing a digit.

131542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192 + ... + 547.

It is an arithmetic number, because the mean of its divisors is an integer number (24975).

2¹³¹⁵⁴² is an apocalyptic number.

131542 is a deficient number, since it is larger than the sum of its proper divisors (68258).

131542 is an equidigital number, since it uses as much as digits as its factorization.

131542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830.

The product of its digits is 120, while the sum is 16.

The square root of 131542 is about 362.6871930466. The cubic root of 131542 is about 50.8574772584.

Adding to 131542 its reverse (245131), we get a palindrome (376673).

The spelling of 131542 in words is "one hundred thirty-one thousand, five hundred forty-two".