122565 has 8 divisors (see below), whose sum is σ = 196128. Its totient is φ = 65360.

The previous prime is 122561. The next prime is 122579. The reversal of 122565 is 565221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122565 - 2² = 122561 is a prime.

It is a Curzon number.

122565 is a lucky number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4071 + ... + 4100.

It is an arithmetic number, because the mean of its divisors is an integer number (24516).

2¹²²⁵⁶⁵ is an apocalyptic number.

122565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122565 is a deficient number, since it is larger than the sum of its proper divisors (73563).

122565 is an equidigital number, since it uses as much as digits as its factorization.

122565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8179.

The product of its digits is 600, while the sum is 21.

The square root of 122565 is about 350.0928448283. The cubic root of 122565 is about 49.6732020488.

Adding to 122565 its reverse (565221), we get a palindrome (687786).

The spelling of 122565 in words is "one hundred twenty-two thousand, five hundred sixty-five".