142544131 has 4 divisors (see below), whose sum is σ = 142582264. Its totient is φ = 142506000.

The previous prime is 142544123. The next prime is 142544161. The reversal of 142544131 is 131445241.

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

It is a cyclic number.

It is not a de Polignac number, because 142544131 - 2³ = 142544123 is a prime.

It is a super-2 number, since 2×142544131² = 40637658565090322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142544096 and 142544105.

It is not an unprimeable number, because it can be changed into a prime (142544111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12765 + ... + 21166.

It is an arithmetic number, because the mean of its divisors is an integer number (35645566).

Almost surely, 2^142544131 is an apocalyptic number.

142544131 is a deficient number, since it is larger than the sum of its proper divisors (38133).

142544131 is an equidigital number, since it uses as much as digits as its factorization.

142544131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38132.

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

The square root of 142544131 is about 11939.1846874064. The cubic root of 142544131 is about 522.3758773561.

Adding to 142544131 its reverse (131445241), we get a palindrome (273989372).

The spelling of 142544131 in words is "one hundred forty-two million, five hundred forty-four thousand, one hundred thirty-one".