12451144 has 8 divisors (see below), whose sum is σ = 23345910. Its totient is φ = 6225568.

The previous prime is 12451141. The next prime is 12451147. The reversal of 12451144 is 44115421.

It is an interprime number because it is at equal distance from previous prime (12451141) and next prime (12451147).

It can be written as a sum of positive squares in only one way, i.e., 12320100 + 131044 = 3510^2 + 362^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12451141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 778189 + ... + 778204.

Almost surely, 2^12451144 is an apocalyptic number.

It is an amenable number.

12451144 is a deficient number, since it is larger than the sum of its proper divisors (10894766).

12451144 is a wasteful number, since it uses less digits than its factorization.

12451144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556399 (or 1556395 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 12451144 is about 3528.6178597292. The cubic root of 12451144 is about 231.7766876159.

Adding to 12451144 its reverse (44115421), we get a palindrome (56566565).

The spelling of 12451144 in words is "twelve million, four hundred fifty-one thousand, one hundred forty-four".