12243 has 16 divisors (see below), whose sum is σ = 20736. Its totient is φ = 6240.

The previous prime is 12241. The next prime is 12251. The reversal of 12243 is 34221.

It is not a de Polignac number, because 12243 - 2¹ = 12241 is a prime.

12243 is a lucky number.

It is a plaindrome in base 14.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (12241) 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, 205 + ... + 257.

It is an arithmetic number, because the mean of its divisors is an integer number (1296).

2¹²²⁴³ is an apocalyptic number.

12243 is a deficient number, since it is larger than the sum of its proper divisors (8493).

12243 is a wasteful number, since it uses less digits than its factorization.

12243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74.

The product of its digits is 48, while the sum is 12.

The square root of 12243 is about 110.6480908105. The cubic root of 12243 is about 23.0477897320.

Adding to 12243 its reverse (34221), we get a palindrome (46464).

It can be divided in two parts, 12 and 243, that multiplied together give a square (2916 = 54²).

The spelling of 12243 in words is "twelve thousand, two hundred forty-three", and thus it is an iban number.