12144267 has 6 divisors (see below), whose sum is σ = 17541732. Its totient is φ = 8096172.

The previous prime is 12144263. The next prime is 12144289. The reversal of 12144267 is 76244121.

It is not a de Polignac number, because 12144267 - 2² = 12144263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12144267.

It is not an unprimeable number, because it can be changed into a prime (12144263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 674673 + ... + 674690.

It is an arithmetic number, because the mean of its divisors is an integer number (2923622).

Almost surely, 2^12144267 is an apocalyptic number.

12144267 is a deficient number, since it is larger than the sum of its proper divisors (5397465).

12144267 is a wasteful number, since it uses less digits than its factorization.

12144267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349369 (or 1349366 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 12144267 is about 3484.8625510915. The cubic root of 12144267 is about 229.8566655770.

Adding to 12144267 its reverse (76244121), we get a palindrome (88388388).

The spelling of 12144267 in words is "twelve million, one hundred forty-four thousand, two hundred sixty-seven".