142171530655769 has 2 divisors, whose sum is σ = 142171530655770. Its totient is φ = 142171530655768.

The previous prime is 142171530655741. The next prime is 142171530655807. The reversal of 142171530655769 is 967556035171241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123551339083225 + 18620191572544 = 11115365^2 + 4315112^2 .

It is an emirp because it is prime and its reverse (967556035171241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142171530655769 - 2⁸ = 142171530655513 is a prime.

It is a super-2 number, since 2×142171530655769² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142171530655709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71085765327884 + 71085765327885.

It is an arithmetic number, because the mean of its divisors is an integer number (71085765327885).

Almost surely, 2^{142171530655769} is an apocalyptic number.

It is an amenable number.

142171530655769 is a deficient number, since it is larger than the sum of its proper divisors (1).

142171530655769 is an equidigital number, since it uses as much as digits as its factorization.

142171530655769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628000, while the sum is 62.

The spelling of 142171530655769 in words is "one hundred forty-two trillion, one hundred seventy-one billion, five hundred thirty million, six hundred fifty-five thousand, seven hundred sixty-nine".