142405762321 has 2 divisors, whose sum is σ = 142405762322. Its totient is φ = 142405762320.

The previous prime is 142405762297. The next prime is 142405762361. The reversal of 142405762321 is 123267504241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76118051025 + 66287711296 = 275895^2 + 257464^2 .

It is a cyclic number.

It is not a de Polignac number, because 142405762321 - 2⁹ = 142405761809 is a prime.

It is a super-2 number, since 2×142405762321² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142405762361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71202881160 + 71202881161.

It is an arithmetic number, because the mean of its divisors is an integer number (71202881161).

Almost surely, 2^142405762321 is an apocalyptic number.

It is an amenable number.

142405762321 is a deficient number, since it is larger than the sum of its proper divisors (1).

142405762321 is an equidigital number, since it uses as much as digits as its factorization.

142405762321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 142405762321 in words is "one hundred forty-two billion, four hundred five million, seven hundred sixty-two thousand, three hundred twenty-one".