12403144 has 32 divisors (see below), whose sum is σ = 25200000. Its totient is φ = 5689152.

The previous prime is 12403123. The next prime is 12403147. The reversal of 12403144 is 44130421.

It is not an unprimeable number, because it can be changed into a prime (12403147) 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 7 ways as a sum of consecutive naturals, for example, 24607 + ... + 25105.

It is an arithmetic number, because the mean of its divisors is an integer number (787500).

Almost surely, 2^12403144 is an apocalyptic number.

It is an amenable number.

12403144 is an abundant number, since it is smaller than the sum of its proper divisors (12796856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12403144 is a wasteful number, since it uses less digits than its factorization.

12403144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 12403144 is about 3521.8097620400. The cubic root of 12403144 is about 231.4784658102.

Adding to 12403144 its reverse (44130421), we get a palindrome (56533565).

The spelling of 12403144 in words is "twelve million, four hundred three thousand, one hundred forty-four".