122705 has 16 divisors (see below), whose sum is σ = 169344. Its totient is φ = 84480.

The previous prime is 122701. The next prime is 122719. The reversal of 122705 is 507221.

It is not a de Polignac number, because 122705 - 2² = 122701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 11.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 122705.

It is not an unprimeable number, because it can be changed into a prime (122701) 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 15 ways as a sum of consecutive naturals, for example, 1217 + ... + 1313.

It is an arithmetic number, because the mean of its divisors is an integer number (10584).

2¹²²⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

122705 is a deficient number, since it is larger than the sum of its proper divisors (46639).

122705 is a wasteful number, since it uses less digits than its factorization.

122705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 122705 is about 350.2927347234. The cubic root of 122705 is about 49.6921079413.

Adding to 122705 its reverse (507221), we get a palindrome (629926).

The spelling of 122705 in words is "one hundred twenty-two thousand, seven hundred five".