122945791 has 2 divisors, whose sum is σ = 122945792. Its totient is φ = 122945790.

The previous prime is 122945759. The next prime is 122945807. The reversal of 122945791 is 197549221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122945791 - 2⁵ = 122945759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122945701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61472895 + 61472896.

It is an arithmetic number, because the mean of its divisors is an integer number (61472896).

Almost surely, 2^122945791 is an apocalyptic number.

122945791 is a deficient number, since it is larger than the sum of its proper divisors (1).

122945791 is an equidigital number, since it uses as much as digits as its factorization.

122945791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 122945791 is about 11088.0923066143. The cubic root of 122945791 is about 497.2459125240.

The spelling of 122945791 in words is "one hundred twenty-two million, nine hundred forty-five thousand, seven hundred ninety-one".