142204556161 has 2 divisors, whose sum is σ = 142204556162. Its totient is φ = 142204556160.

The previous prime is 142204556129. The next prime is 142204556191. The reversal of 142204556161 is 161655402241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109968508225 + 32236047936 = 331615^2 + 179544^2 .

It is a cyclic number.

It is not a de Polignac number, because 142204556161 - 2⁵ = 142204556129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142204556161.

It is not a weakly prime, because it can be changed into another prime (142204556191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71102278080 + 71102278081.

It is an arithmetic number, because the mean of its divisors is an integer number (71102278081).

Almost surely, 2^142204556161 is an apocalyptic number.

It is an amenable number.

142204556161 is a deficient number, since it is larger than the sum of its proper divisors (1).

142204556161 is an equidigital number, since it uses as much as digits as its factorization.

142204556161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 142204556161 in words is "one hundred forty-two billion, two hundred four million, five hundred fifty-six thousand, one hundred sixty-one".