142321163442569 has 2 divisors, whose sum is σ = 142321163442570. Its totient is φ = 142321163442568.

The previous prime is 142321163442439. The next prime is 142321163442583. The reversal of 142321163442569 is 965244361123241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138797144688400 + 3524018754169 = 11781220^2 + 1877237^2 .

It is a cyclic number.

It is not a de Polignac number, because 142321163442569 - 2¹² = 142321163438473 is a prime.

It is a super-2 number, since 2×142321163442569² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 142321163442569.

It is not a weakly prime, because it can be changed into another prime (142321123442569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71160581721284 + 71160581721285.

It is an arithmetic number, because the mean of its divisors is an integer number (71160581721285).

Almost surely, 2^{142321163442569} is an apocalyptic number.

It is an amenable number.

142321163442569 is a deficient number, since it is larger than the sum of its proper divisors (1).

142321163442569 is an equidigital number, since it uses as much as digits as its factorization.

142321163442569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 53.

The spelling of 142321163442569 in words is "one hundred forty-two trillion, three hundred twenty-one billion, one hundred sixty-three million, four hundred forty-two thousand, five hundred sixty-nine".