12385543 has 4 divisors (see below), whose sum is σ = 12398400. Its totient is φ = 12372688.

The previous prime is 12385531. The next prime is 12385559. The reversal of 12385543 is 34558321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12385543 - 2⁹ = 12385031 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12382543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4855 + ... + 6952.

It is an arithmetic number, because the mean of its divisors is an integer number (3099600).

Almost surely, 2^12385543 is an apocalyptic number.

12385543 is a deficient number, since it is larger than the sum of its proper divisors (12857).

12385543 is a wasteful number, since it uses less digits than its factorization.

12385543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12856.

The product of its digits is 14400, while the sum is 31.

The square root of 12385543 is about 3519.3100176029. The cubic root of 12385543 is about 231.3689188217.

The spelling of 12385543 in words is "twelve million, three hundred eighty-five thousand, five hundred forty-three".