12543146 has 32 divisors (see below), whose sum is σ = 23777280. Its totient is φ = 4820400.

The previous prime is 12543131. The next prime is 12543151. The reversal of 12543146 is 64134521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11651 + ... + 12681.

It is an arithmetic number, because the mean of its divisors is an integer number (743040).

Almost surely, 2^12543146 is an apocalyptic number.

12543146 is a deficient number, since it is larger than the sum of its proper divisors (11234134).

12543146 is a wasteful number, since it uses less digits than its factorization.

12543146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its digits is 2880, while the sum is 26.

The square root of 12543146 is about 3541.6304155007. The cubic root of 12543146 is about 232.3461563668.

Adding to 12543146 its reverse (64134521), we get a palindrome (76677667).

The spelling of 12543146 in words is "twelve million, five hundred forty-three thousand, one hundred forty-six".