142450557761 has 2 divisors, whose sum is σ = 142450557762. Its totient is φ = 142450557760.

The previous prime is 142450557679. The next prime is 142450557779. The reversal of 142450557761 is 167755054241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123583887025 + 18866670736 = 351545^2 + 137356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142450557761 is a prime.

It is a super-2 number, since 2×142450557761² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142450557961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71225278880 + 71225278881.

It is an arithmetic number, because the mean of its divisors is an integer number (71225278881).

Almost surely, 2^142450557761 is an apocalyptic number.

It is an amenable number.

142450557761 is a deficient number, since it is larger than the sum of its proper divisors (1).

142450557761 is an equidigital number, since it uses as much as digits as its factorization.

142450557761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176000, while the sum is 47.

The spelling of 142450557761 in words is "one hundred forty-two billion, four hundred fifty million, five hundred fifty-seven thousand, seven hundred sixty-one".