142996231 has 32 divisors (see below), whose sum is σ = 181757952. Its totient is φ = 109693440.

The previous prime is 142996219. The next prime is 142996237. The reversal of 142996231 is 132699241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142996231 is a prime.

It is a super-2 number, since 2×142996231² = 40895844160410722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142996237) 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 31 ways as a sum of consecutive naturals, for example, 206596 + ... + 207286.

It is an arithmetic number, because the mean of its divisors is an integer number (5679936).

Almost surely, 2^142996231 is an apocalyptic number.

142996231 is a deficient number, since it is larger than the sum of its proper divisors (38761721).

142996231 is a wasteful number, since it uses less digits than its factorization.

142996231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799.

The product of its digits is 23328, while the sum is 37.

The square root of 142996231 is about 11958.1031522562. The cubic root of 142996231 is about 522.9275588898.

The spelling of 142996231 in words is "one hundred forty-two million, nine hundred ninety-six thousand, two hundred thirty-one".