122309 has 4 divisors (see below), whose sum is σ = 133440. Its totient is φ = 111180.

The previous prime is 122299. The next prime is 122321. The reversal of 122309 is 903221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122309 - 2⁸ = 122053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122389) 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 in 3 ways as a sum of consecutive naturals, for example, 5549 + ... + 5570.

It is an arithmetic number, because the mean of its divisors is an integer number (33360).

2¹²²³⁰⁹ is an apocalyptic number.

It is an amenable number.

122309 is a deficient number, since it is larger than the sum of its proper divisors (11131).

122309 is a wasteful number, since it uses less digits than its factorization.

122309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11130.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 122309 is about 349.7270364155. The cubic root of 122309 is about 49.6385940082.

The spelling of 122309 in words is "one hundred twenty-two thousand, three hundred nine".