12123843 has 16 divisors (see below), whose sum is σ = 17109120. Its totient is φ = 7615296.

The previous prime is 12123817. The next prime is 12123857. The reversal of 12123843 is 34832121.

It is not a de Polignac number, because 12123843 - 2¹² = 12119747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12122843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12471 + ... + 13407.

It is an arithmetic number, because the mean of its divisors is an integer number (1069320).

Almost surely, 2^12123843 is an apocalyptic number.

12123843 is a deficient number, since it is larger than the sum of its proper divisors (4985277).

12123843 is a wasteful number, since it uses less digits than its factorization.

12123843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186.

The product of its digits is 1152, while the sum is 24.

The square root of 12123843 is about 3481.9309298147. The cubic root of 12123843 is about 229.7277370667.

Adding to 12123843 its reverse (34832121), we get a palindrome (46955964).

The spelling of 12123843 in words is "twelve million, one hundred twenty-three thousand, eight hundred forty-three".