122056609 has 4 divisors (see below), whose sum is σ = 122328900. Its totient is φ = 121784320.

The previous prime is 122056601. The next prime is 122056637. The reversal of 122056609 is 906650221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 906650221 = 18367 ⋅49363.

It can be written as a sum of positive squares in 2 ways, for example, as 105678400 + 16378209 = 10280^2 + 4047^2 .

It is a cyclic number.

It is not a de Polignac number, because 122056609 - 2³ = 122056601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122056601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135472 + ... + 136369.

It is an arithmetic number, because the mean of its divisors is an integer number (30582225).

Almost surely, 2^122056609 is an apocalyptic number.

It is an amenable number.

122056609 is a deficient number, since it is larger than the sum of its proper divisors (272291).

122056609 is an equidigital number, since it uses as much as digits as its factorization.

122056609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272290.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 122056609 is about 11047.9232890168. The cubic root of 122056609 is about 496.0442655278.

The spelling of 122056609 in words is "one hundred twenty-two million, fifty-six thousand, six hundred nine".