142555331 has 2 divisors, whose sum is σ = 142555332. Its totient is φ = 142555330.

The previous prime is 142555321. The next prime is 142555337. The reversal of 142555331 is 133555241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142555331 - 2¹⁴ = 142538947 is a prime.

It is a super-2 number, since 2×142555331² = 40644044793039122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142555294 and 142555303.

It is not a weakly prime, because it can be changed into another prime (142555337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71277665 + 71277666.

It is an arithmetic number, because the mean of its divisors is an integer number (71277666).

Almost surely, 2^142555331 is an apocalyptic number.

142555331 is a deficient number, since it is larger than the sum of its proper divisors (1).

142555331 is an equidigital number, since it uses as much as digits as its factorization.

142555331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 29.

The square root of 142555331 is about 11939.6537219469. The cubic root of 142555331 is about 522.3895583978.

The spelling of 142555331 in words is "one hundred forty-two million, five hundred fifty-five thousand, three hundred thirty-one".