12007144 has 8 divisors (see below), whose sum is σ = 22513410. Its totient is φ = 6003568.

The previous prime is 12007123. The next prime is 12007147. The reversal of 12007144 is 44170021.

It can be written as a sum of positive squares in only one way, i.e., 11142244 + 864900 = 3338^2 + 930^2 .

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 (12007147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750439 + ... + 750454.

Almost surely, 2^12007144 is an apocalyptic number.

It is an amenable number.

12007144 is a deficient number, since it is larger than the sum of its proper divisors (10506266).

12007144 is a wasteful number, since it uses less digits than its factorization.

12007144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500899 (or 1500895 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 12007144 is about 3465.1326092951. The cubic root of 12007144 is about 228.9882719342.

Adding to 12007144 its reverse (44170021), we get a palindrome (56177165).

The spelling of 12007144 in words is "twelve million, seven thousand, one hundred forty-four".