142162212161 has 2 divisors, whose sum is σ = 142162212162. Its totient is φ = 142162212160.

The previous prime is 142162212109. The next prime is 142162212191. The reversal of 142162212161 is 161212261241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142162177936 + 34225 = 377044^2 + 185^2 .

It is an emirp because it is prime and its reverse (161212261241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142162212161 - 2¹⁰ = 142162211137 is a prime.

It is not a weakly prime, because it can be changed into another prime (142162212191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71081106080 + 71081106081.

It is an arithmetic number, because the mean of its divisors is an integer number (71081106081).

Almost surely, 2^142162212161 is an apocalyptic number.

It is an amenable number.

142162212161 is a deficient number, since it is larger than the sum of its proper divisors (1).

142162212161 is an equidigital number, since it uses as much as digits as its factorization.

142162212161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 29.

The spelling of 142162212161 in words is "one hundred forty-two billion, one hundred sixty-two million, two hundred twelve thousand, one hundred sixty-one".