122535139 has 2 divisors, whose sum is σ = 122535140. Its totient is φ = 122535138.

The previous prime is 122535131. The next prime is 122535143. The reversal of 122535139 is 931535221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122535139 - 2³ = 122535131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122535139.

It is not a weakly prime, because it can be changed into another prime (122535131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61267569 + 61267570.

It is an arithmetic number, because the mean of its divisors is an integer number (61267570).

Almost surely, 2^122535139 is an apocalyptic number.

122535139 is a deficient number, since it is larger than the sum of its proper divisors (1).

122535139 is an equidigital number, since it uses as much as digits as its factorization.

122535139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 31.

The square root of 122535139 is about 11069.5591149783. The cubic root of 122535139 is about 496.6916769432.

The spelling of 122535139 in words is "one hundred twenty-two million, five hundred thirty-five thousand, one hundred thirty-nine".