12144357 has 16 divisors (see below), whose sum is σ = 18081280. Its totient is φ = 8055936.

The previous prime is 12144347. The next prime is 12144371. The reversal of 12144357 is 75344121.

It is not a de Polignac number, because 12144357 - 2⁷ = 12144229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12144357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144347) 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, 5013 + ... + 7029.

It is an arithmetic number, because the mean of its divisors is an integer number (1130080).

Almost surely, 2^12144357 is an apocalyptic number.

It is an amenable number.

12144357 is a deficient number, since it is larger than the sum of its proper divisors (5936923).

12144357 is a wasteful number, since it uses less digits than its factorization.

12144357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249 (or 2243 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 12144357 is about 3484.8754640589. The cubic root of 12144357 is about 229.8572333908.

Adding to 12144357 its reverse (75344121), we get a palindrome (87488478).

The spelling of 12144357 in words is "twelve million, one hundred forty-four thousand, three hundred fifty-seven".