122645 has 8 divisors (see below), whose sum is σ = 155040. Its totient is φ = 92880.

The previous prime is 122611. The next prime is 122651. The reversal of 122645 is 546221.

It is a happy number.

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

It is not a de Polignac number, because 122645 - 2⁸ = 122389 is a prime.

It is a Curzon number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 551 + ... + 740.

It is an arithmetic number, because the mean of its divisors is an integer number (19380).

2¹²²⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

122645 is a deficient number, since it is larger than the sum of its proper divisors (32395).

122645 is a wasteful number, since it uses less digits than its factorization.

122645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315.

The product of its digits is 480, while the sum is 20.

The square root of 122645 is about 350.2070815960. The cubic root of 122645 is about 49.6840071777.

Adding to 122645 its reverse (546221), we get a palindrome (668866).

It can be divided in two parts, 122 and 645, that added together give a palindrome (767).

The spelling of 122645 in words is "one hundred twenty-two thousand, six hundred forty-five".