142422297217 has 2 divisors, whose sum is σ = 142422297218. Its totient is φ = 142422297216.

The previous prime is 142422297191. The next prime is 142422297287. The reversal of 142422297217 is 712792224241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141333891136 + 1088406081 = 375944^2 + 32991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142422297217 is a prime.

It is a super-2 number, since 2×142422297217² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142422297287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71211148608 + 71211148609.

It is an arithmetic number, because the mean of its divisors is an integer number (71211148609).

Almost surely, 2^142422297217 is an apocalyptic number.

It is an amenable number.

142422297217 is a deficient number, since it is larger than the sum of its proper divisors (1).

142422297217 is an equidigital number, since it uses as much as digits as its factorization.

142422297217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 43.

The spelling of 142422297217 in words is "one hundred forty-two billion, four hundred twenty-two million, two hundred ninety-seven thousand, two hundred seventeen".