12007145 has 16 divisors (see below), whose sum is σ = 15335040. Its totient is φ = 8999424.

The previous prime is 12007123. The next prime is 12007147. The reversal of 12007145 is 54170021.

It is a cyclic number.

It is not a de Polignac number, because 12007145 - 2¹⁶ = 11941609 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 8564 + ... + 9866.

It is an arithmetic number, because the mean of its divisors is an integer number (958440).

Almost surely, 2^12007145 is an apocalyptic number.

It is an amenable number.

12007145 is a deficient number, since it is larger than the sum of its proper divisors (3327895).

12007145 is a wasteful number, since it uses less digits than its factorization.

12007145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 12007145 is about 3465.1327535897. The cubic root of 12007145 is about 228.9882782912.

Adding to 12007145 its reverse (54170021), we get a palindrome (66177166).

The spelling of 12007145 in words is "twelve million, seven thousand, one hundred forty-five".