142432131 has 4 divisors (see below), whose sum is σ = 189909512. Its totient is φ = 94954752.

The previous prime is 142432097. The next prime is 142432159. The reversal of 142432131 is 131234241.

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

It is not a de Polignac number, because 142432131 - 2¹¹ = 142430083 is a prime.

It is a super-2 number, since 2×142432131² = 40573823882402322, 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 = 142432098 and 142432107.

It is not an unprimeable number, because it can be changed into a prime (142431131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23738686 + ... + 23738691.

It is an arithmetic number, because the mean of its divisors is an integer number (47477378).

Almost surely, 2^142432131 is an apocalyptic number.

142432131 is a deficient number, since it is larger than the sum of its proper divisors (47477381).

142432131 is an equidigital number, since it uses as much as digits as its factorization.

142432131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47477380.

The product of its digits is 576, while the sum is 21.

The square root of 142432131 is about 11934.4933281644. The cubic root of 142432131 is about 522.2390275078.

Adding to 142432131 its reverse (131234241), we get a palindrome (273666372).

The spelling of 142432131 in words is "one hundred forty-two million, four hundred thirty-two thousand, one hundred thirty-one".