122643 has 6 divisors (see below), whose sum is σ = 177164. Its totient is φ = 81756.

The previous prime is 122611. The next prime is 122651. The reversal of 122643 is 346221.

It is a happy number.

122643 is a `hidden beast` number, since 1 + 22 + 643 = 666.

It is not a de Polignac number, because 122643 - 2⁵ = 122611 is a prime.

It is a Duffinian number.

122643 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 122643.

It is not an unprimeable number, because it can be changed into a prime (122653) 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 5 ways as a sum of consecutive naturals, for example, 6805 + ... + 6822.

2¹²²⁶⁴³ is an apocalyptic number.

122643 is a deficient number, since it is larger than the sum of its proper divisors (54521).

122643 is a wasteful number, since it uses less digits than its factorization.

122643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13633 (or 13630 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 122643 is about 350.2042261310. The cubic root of 122643 is about 49.6837371068.

Adding to 122643 its reverse (346221), we get a palindrome (468864).

The spelling of 122643 in words is "one hundred twenty-two thousand, six hundred forty-three".