142656169 has 2 divisors, whose sum is σ = 142656170. Its totient is φ = 142656168.

The previous prime is 142656149. The next prime is 142656187. The reversal of 142656169 is 961656241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140659600 + 1996569 = 11860^2 + 1413^2 .

It is a cyclic number.

It is not a de Polignac number, because 142656169 - 2⁹ = 142655657 is a prime.

It is a super-2 number, since 2×142656169² = 40701565107513122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142656119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71328084 + 71328085.

It is an arithmetic number, because the mean of its divisors is an integer number (71328085).

Almost surely, 2^142656169 is an apocalyptic number.

It is an amenable number.

142656169 is a deficient number, since it is larger than the sum of its proper divisors (1).

142656169 is an equidigital number, since it uses as much as digits as its factorization.

142656169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 142656169 is about 11943.8757947326. The cubic root of 142656169 is about 522.5127019340.

The spelling of 142656169 in words is "one hundred forty-two million, six hundred fifty-six thousand, one hundred sixty-nine".