122569 has 4 divisors (see below), whose sum is σ = 129040. Its totient is φ = 116100.

The previous prime is 122561. The next prime is 122579. The reversal of 122569 is 965221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 965221 = 43 ⋅22447.

It is a cyclic number.

It is not a de Polignac number, because 122569 - 2³ = 122561 is a prime.

It is a super-2 number, since 2×122569² = 30046319522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (122561) 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, 3207 + ... + 3244.

It is an arithmetic number, because the mean of its divisors is an integer number (32260).

2¹²²⁵⁶⁹ is an apocalyptic number.

122569 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

122569 is a deficient number, since it is larger than the sum of its proper divisors (6471).

122569 is an equidigital number, since it uses as much as digits as its factorization.

122569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470.

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

The square root of 122569 is about 350.0985575520. The cubic root of 122569 is about 49.6737424169.

The spelling of 122569 in words is "one hundred twenty-two thousand, five hundred sixty-nine".