12145143 has 16 divisors (see below), whose sum is σ = 16694496. Its totient is φ = 7848960.

The previous prime is 12145103. The next prime is 12145151. The reversal of 12145143 is 34154121.

It is not a de Polignac number, because 12145143 - 2⁹ = 12144631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145103) 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, 35871 + ... + 36207.

It is an arithmetic number, because the mean of its divisors is an integer number (1043406).

Almost surely, 2^12145143 is an apocalyptic number.

12145143 is a deficient number, since it is larger than the sum of its proper divisors (4549353).

12145143 is a wasteful number, since it uses less digits than its factorization.

12145143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674.

The product of its digits is 480, while the sum is 21.

The square root of 12145143 is about 3484.9882352743. The cubic root of 12145143 is about 229.8621921791.

Adding to 12145143 its reverse (34154121), we get a palindrome (46299264).

The spelling of 12145143 in words is "twelve million, one hundred forty-five thousand, one hundred forty-three".