12007143 has 16 divisors (see below), whose sum is σ = 17848800. Its totient is φ = 7977600.

The previous prime is 12007123. The next prime is 12007147. The reversal of 12007143 is 34170021.

It is not a de Polignac number, because 12007143 - 2⁵ = 12007111 is a prime.

It is a congruent number.

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, 10273 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (1115550).

Almost surely, 2^12007143 is an apocalyptic number.

12007143 is a deficient number, since it is larger than the sum of its proper divisors (5841657).

12007143 is a wasteful number, since it uses less digits than its factorization.

12007143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519 (or 1513 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12007143 is about 3465.1324650004. The cubic root of 12007143 is about 228.9882655772.

Adding to 12007143 its reverse (34170021), we get a palindrome (46177164).

The spelling of 12007143 in words is "twelve million, seven thousand, one hundred forty-three".