142149331 has 2 divisors, whose sum is σ = 142149332. Its totient is φ = 142149330.

The previous prime is 142149307. The next prime is 142149379. The reversal of 142149331 is 133941241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142149331 - 2⁵ = 142149299 is a prime.

It is a super-2 number, since 2×142149331² = 40412864607495122, 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 142149331.

It is not a weakly prime, because it can be changed into another prime (142149391) 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 as a sum of consecutive naturals, namely, 71074665 + 71074666.

It is an arithmetic number, because the mean of its divisors is an integer number (71074666).

Almost surely, 2^142149331 is an apocalyptic number.

142149331 is a deficient number, since it is larger than the sum of its proper divisors (1).

142149331 is an equidigital number, since it uses as much as digits as its factorization.

142149331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 142149331 is about 11922.6394309314. The cubic root of 142149331 is about 521.8931620772.

The spelling of 142149331 in words is "one hundred forty-two million, one hundred forty-nine thousand, three hundred thirty-one".