122146939 has 2 divisors, whose sum is σ = 122146940. Its totient is φ = 122146938.

The previous prime is 122146907. The next prime is 122146943. The reversal of 122146939 is 939641221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122146939 - 2⁵ = 122146907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122146898 and 122146907.

It is not a weakly prime, because it can be changed into another prime (122146039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61073469 + 61073470.

It is an arithmetic number, because the mean of its divisors is an integer number (61073470).

Almost surely, 2^122146939 is an apocalyptic number.

122146939 is a deficient number, since it is larger than the sum of its proper divisors (1).

122146939 is an equidigital number, since it uses as much as digits as its factorization.

122146939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 122146939 is about 11052.0106315548. The cubic root of 122146939 is about 496.1666039243.

The spelling of 122146939 in words is "one hundred twenty-two million, one hundred forty-six thousand, nine hundred thirty-nine".