122766089 has 2 divisors, whose sum is σ = 122766090. Its totient is φ = 122766088.

The previous prime is 122766053. The next prime is 122766097. The reversal of 122766089 is 980667221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118439689 + 4326400 = 10883^2 + 2080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122766089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (122766389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61383044 + 61383045.

It is an arithmetic number, because the mean of its divisors is an integer number (61383045).

Almost surely, 2^122766089 is an apocalyptic number.

It is an amenable number.

122766089 is a deficient number, since it is larger than the sum of its proper divisors (1).

122766089 is an equidigital number, since it uses as much as digits as its factorization.

122766089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 122766089 is about 11079.9859656951. The cubic root of 122766089 is about 497.0035302107.

The spelling of 122766089 in words is "one hundred twenty-two million, seven hundred sixty-six thousand, eighty-nine".