12144407 has 12 divisors (see below), whose sum is σ = 13451088. Its totient is φ = 10956000.

The previous prime is 12144403. The next prime is 12144413. The reversal of 12144407 is 70444121.

It is a happy number.

It is not a de Polignac number, because 12144407 - 2² = 12144403 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19907 + ... + 20507.

It is an arithmetic number, because the mean of its divisors is an integer number (1120924).

Almost surely, 2^12144407 is an apocalyptic number.

12144407 is a deficient number, since it is larger than the sum of its proper divisors (1306681).

12144407 is a wasteful number, since it uses less digits than its factorization.

12144407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 12144407 is about 3484.8826379091. The cubic root of 12144407 is about 229.8575488417.

Adding to 12144407 its reverse (70444121), we get a palindrome (82588528).

The spelling of 12144407 in words is "twelve million, one hundred forty-four thousand, four hundred seven".