142337231 has 2 divisors, whose sum is σ = 142337232. Its totient is φ = 142337230.

The previous prime is 142337203. The next prime is 142337263. The reversal of 142337231 is 132733241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142337231 is a prime.

It is a super-2 number, since 2×142337231² = 40519774657494722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142337231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142337201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71168615 + 71168616.

It is an arithmetic number, because the mean of its divisors is an integer number (71168616).

Almost surely, 2^142337231 is an apocalyptic number.

142337231 is a deficient number, since it is larger than the sum of its proper divisors (1).

142337231 is an equidigital number, since it uses as much as digits as its factorization.

142337231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 26.

The square root of 142337231 is about 11930.5167951770. The cubic root of 142337231 is about 522.1230155411.

The spelling of 142337231 in words is "one hundred forty-two million, three hundred thirty-seven thousand, two hundred thirty-one".