122491079 has 2 divisors, whose sum is σ = 122491080. Its totient is φ = 122491078.

The previous prime is 122491073. The next prime is 122491087. The reversal of 122491079 is 970194221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122491079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122491073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61245539 + 61245540.

It is an arithmetic number, because the mean of its divisors is an integer number (61245540).

Almost surely, 2^122491079 is an apocalyptic number.

122491079 is a deficient number, since it is larger than the sum of its proper divisors (1).

122491079 is an equidigital number, since it uses as much as digits as its factorization.

122491079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 122491079 is about 11067.5687935517. The cubic root of 122491079 is about 496.6321379436.

The spelling of 122491079 in words is "one hundred twenty-two million, four hundred ninety-one thousand, seventy-nine".