142431232 has 44 divisors (see below), whose sum is σ = 286252480. Its totient is φ = 70834176.

The previous prime is 142431221. The next prime is 142431257. The reversal of 142431232 is 232134241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375619 + ... + 375997.

Almost surely, 2^142431232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142431232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143126240).

142431232 is an abundant number, since it is smaller than the sum of its proper divisors (143821248).

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

142431232 is an equidigital number, since it uses as much as digits as its factorization.

142431232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 748 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 142431232 is about 11934.4556641683. The cubic root of 142431232 is about 522.2379287532.

Adding to 142431232 its reverse (232134241), we get a palindrome (374565473).

The spelling of 142431232 in words is "one hundred forty-two million, four hundred thirty-one thousand, two hundred thirty-two".