122939 has 2 divisors, whose sum is σ = 122940. Its totient is φ = 122938.

The previous prime is 122929. The next prime is 122953. The reversal of 122939 is 939221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122939 - 2¹² = 118843 is a prime.

It is a super-2 number, since 2×122939² = 30227995442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61469 + 61470.

It is an arithmetic number, because the mean of its divisors is an integer number (61470).

2¹²²⁹³⁹ is an apocalyptic number.

122939 is a deficient number, since it is larger than the sum of its proper divisors (1).

122939 is an equidigital number, since it uses as much as digits as its factorization.

122939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 26.

The square root of 122939 is about 350.6265819929. The cubic root of 122939 is about 49.7236757109.

The spelling of 122939 in words is "one hundred twenty-two thousand, nine hundred thirty-nine".