12243105 has 24 divisors (see below), whose sum is σ = 24253632. Its totient is φ = 5596704.

The previous prime is 12243103. The next prime is 12243113. The reversal of 12243105 is 50134221.

It is not a de Polignac number, because 12243105 - 2¹ = 12243103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12243103) 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 23 ways as a sum of consecutive naturals, for example, 19119 + ... + 19748.

It is an arithmetic number, because the mean of its divisors is an integer number (1010568).

Almost surely, 2^12243105 is an apocalyptic number.

12243105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12243105 is a deficient number, since it is larger than the sum of its proper divisors (12010527).

12243105 is a wasteful number, since it uses less digits than its factorization.

12243105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38885 (or 38882 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12243105 is about 3499.0148613574. The cubic root of 12243105 is about 230.4785562025.

Adding to 12243105 its reverse (50134221), we get a palindrome (62377326).

The spelling of 12243105 in words is "twelve million, two hundred forty-three thousand, one hundred five".