122146589 has 2 divisors, whose sum is σ = 122146590. Its totient is φ = 122146588.

The previous prime is 122146553. The next prime is 122146643. The reversal of 122146589 is 985641221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97812100 + 24334489 = 9890^2 + 4933^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122146589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122148589) 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, 61073294 + 61073295.

It is an arithmetic number, because the mean of its divisors is an integer number (61073295).

Almost surely, 2^122146589 is an apocalyptic number.

It is an amenable number.

122146589 is a deficient number, since it is larger than the sum of its proper divisors (1).

122146589 is an equidigital number, since it uses as much as digits as its factorization.

122146589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 122146589 is about 11051.9947973205. The cubic root of 122146589 is about 496.1661300184.

The spelling of 122146589 in words is "one hundred twenty-two million, one hundred forty-six thousand, five hundred eighty-nine".