122741457161 has 4 divisors (see below), whose sum is σ = 122793009924. Its totient is φ = 122689904400.

The previous prime is 122741457127. The next prime is 122741457173. The reversal of 122741457161 is 161754147221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4091521225 + 118649935936 = 63965^2 + 344456^2 .

It is a cyclic number.

It is not a de Polignac number, because 122741457161 - 2¹⁰ = 122741456137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122741457101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25772810 + ... + 25777571.

It is an arithmetic number, because the mean of its divisors is an integer number (30698252481).

Almost surely, 2^122741457161 is an apocalyptic number.

It is an amenable number.

122741457161 is a deficient number, since it is larger than the sum of its proper divisors (51552763).

122741457161 is an equidigital number, since it uses as much as digits as its factorization.

122741457161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51552762.

The product of its digits is 94080, while the sum is 41.

The spelling of 122741457161 in words is "one hundred twenty-two billion, seven hundred forty-one million, four hundred fifty-seven thousand, one hundred sixty-one".