122942089 has 2 divisors, whose sum is σ = 122942090. Its totient is φ = 122942088.

The previous prime is 122942087. The next prime is 122942093. The reversal of 122942089 is 980249221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106254864 + 16687225 = 10308^2 + 4085^2 .

It is a cyclic number.

It is not a de Polignac number, because 122942089 - 2¹ = 122942087 is a prime.

It is a super-2 number, since 2×122942089² = 30229514495367842, which contains 22 as substring.

Together with 122942087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (122942087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61471044 + 61471045.

It is an arithmetic number, because the mean of its divisors is an integer number (61471045).

Almost surely, 2^122942089 is an apocalyptic number.

It is an amenable number.

122942089 is a deficient number, since it is larger than the sum of its proper divisors (1).

122942089 is an equidigital number, since it uses as much as digits as its factorization.

122942089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 122942089 is about 11087.9253695180. The cubic root of 122942089 is about 497.2409216446.

The spelling of 122942089 in words is "one hundred twenty-two million, nine hundred forty-two thousand, eighty-nine".