122869 has 2 divisors, whose sum is σ = 122870. Its totient is φ = 122868.

The previous prime is 122867. The next prime is 122887. The reversal of 122869 is 968221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119025 + 3844 = 345^2 + 62^2 .

It is a cyclic number.

It is not a de Polignac number, because 122869 - 2¹ = 122867 is a prime.

It is a super-2 number, since 2×122869² = 30193582322, which contains 22 as substring.

Together with 122867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61434 + 61435.

It is an arithmetic number, because the mean of its divisors is an integer number (61435).

2¹²²⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

122869 is a deficient number, since it is larger than the sum of its proper divisors (1).

122869 is an equidigital number, since it uses as much as digits as its factorization.

122869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 122869 is about 350.5267464831. The cubic root of 122869 is about 49.7142365633.

The spelling of 122869 in words is "one hundred twenty-two thousand, eight hundred sixty-nine".