122961739 has 2 divisors, whose sum is σ = 122961740. Its totient is φ = 122961738.

The previous prime is 122961721. The next prime is 122961869. The reversal of 122961739 is 937169221.

It is a weak prime.

It is an emirp because it is prime and its reverse (937169221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122961739 - 2²¹ = 120864587 is a prime.

It is not a weakly prime, because it can be changed into another prime (122961439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61480869 + 61480870.

It is an arithmetic number, because the mean of its divisors is an integer number (61480870).

Almost surely, 2^122961739 is an apocalyptic number.

122961739 is a deficient number, since it is larger than the sum of its proper divisors (1).

122961739 is an equidigital number, since it uses as much as digits as its factorization.

122961739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 40.

The square root of 122961739 is about 11088.8114331519. The cubic root of 122961739 is about 497.2674117959.

The spelling of 122961739 in words is "one hundred twenty-two million, nine hundred sixty-one thousand, seven hundred thirty-nine".