122724761 has 2 divisors, whose sum is σ = 122724762. Its totient is φ = 122724760.

The previous prime is 122724703. The next prime is 122724769. The reversal of 122724761 is 167427221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121992025 + 732736 = 11045^2 + 856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122724761 is a prime.

It is a super-2 number, since 2×122724761² = 30122733925014242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122724769) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61362380 + 61362381.

It is an arithmetic number, because the mean of its divisors is an integer number (61362381).

Almost surely, 2^122724761 is an apocalyptic number.

It is an amenable number.

122724761 is a deficient number, since it is larger than the sum of its proper divisors (1).

122724761 is an equidigital number, since it uses as much as digits as its factorization.

122724761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 32.

The square root of 122724761 is about 11078.1208243998. The cubic root of 122724761 is about 496.9477534964.

The spelling of 122724761 in words is "one hundred twenty-two million, seven hundred twenty-four thousand, seven hundred sixty-one".