142043231 has 12 divisors (see below), whose sum is σ = 156810192. Its totient is φ = 128568000.

The previous prime is 142043203. The next prime is 142043261. The reversal of 142043231 is 132340241.

It is not a de Polignac number, because 142043231 - 2¹⁰ = 142042207 is a prime.

It is a super-2 number, since 2×142043231² = 40352558945838722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142043261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26726 + ... + 31596.

It is an arithmetic number, because the mean of its divisors is an integer number (13067516).

Almost surely, 2^142043231 is an apocalyptic number.

142043231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142043231 is a deficient number, since it is larger than the sum of its proper divisors (14766961).

142043231 is a wasteful number, since it uses less digits than its factorization.

142043231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5134 (or 5123 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 142043231 is about 11918.1890822390. The cubic root of 142043231 is about 521.7632830583.

Adding to 142043231 its reverse (132340241), we get a palindrome (274383472).

The spelling of 142043231 in words is "one hundred forty-two million, forty-three thousand, two hundred thirty-one".