122635 has 4 divisors (see below), whose sum is σ = 147168. Its totient is φ = 98104.

The previous prime is 122611. The next prime is 122651. The reversal of 122635 is 536221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 536221 = 7 ⋅76603.

It is a cyclic number.

It is not a de Polignac number, because 122635 - 2¹¹ = 120587 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 12259 + ... + 12268.

It is an arithmetic number, because the mean of its divisors is an integer number (36792).

2¹²²⁶³⁵ is an apocalyptic number.

122635 is a deficient number, since it is larger than the sum of its proper divisors (24533).

122635 is an equidigital number, since it uses as much as digits as its factorization.

122635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24532.

The product of its digits is 360, while the sum is 19.

The square root of 122635 is about 350.1928040380. The cubic root of 122635 is about 49.6826567936.

Adding to 122635 its reverse (536221), we get a palindrome (658856).

It can be divided in two parts, 122 and 635, that added together give a palindrome (757).

The spelling of 122635 in words is "one hundred twenty-two thousand, six hundred thirty-five".