122659 has 4 divisors (see below), whose sum is σ = 128016. Its totient is φ = 117304.

The previous prime is 122653. The next prime is 122663. The reversal of 122659 is 956221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956221 = 7 ⋅136603.

It is a cyclic number.

It is not a de Polignac number, because 122659 - 2³ = 122651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122651) 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, 2644 + ... + 2689.

It is an arithmetic number, because the mean of its divisors is an integer number (32004).

2¹²²⁶⁵⁹ is an apocalyptic number.

122659 is a deficient number, since it is larger than the sum of its proper divisors (5357).

122659 is an equidigital number, since it uses as much as digits as its factorization.

122659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5356.

The product of its digits is 1080, while the sum is 25.

The square root of 122659 is about 350.2270691994. The cubic root of 122659 is about 49.6858975921.

The spelling of 122659 in words is "one hundred twenty-two thousand, six hundred fifty-nine".