122725739 has 2 divisors, whose sum is σ = 122725740. Its totient is φ = 122725738.

The previous prime is 122725727. The next prime is 122725747. The reversal of 122725739 is 937527221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122725739 - 2²⁰ = 121677163 is a prime.

It is a super-2 number, since 2×122725739² = 30123214026192242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122725439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61362869 + 61362870.

It is an arithmetic number, because the mean of its divisors is an integer number (61362870).

Almost surely, 2^122725739 is an apocalyptic number.

122725739 is a deficient number, since it is larger than the sum of its proper divisors (1).

122725739 is an equidigital number, since it uses as much as digits as its factorization.

122725739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 122725739 is about 11078.1649653722. The cubic root of 122725739 is about 496.9490735604.

The spelling of 122725739 in words is "one hundred twenty-two million, seven hundred twenty-five thousand, seven hundred thirty-nine".