12006543 has 16 divisors (see below), whose sum is σ = 16321536. Its totient is φ = 7849920.

The previous prime is 12006541. The next prime is 12006583. The reversal of 12006543 is 34560021.

It is a happy number.

It is not a de Polignac number, because 12006543 - 2¹ = 12006541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12006541) 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, 53730 + ... + 53952.

It is an arithmetic number, because the mean of its divisors is an integer number (1020096).

Almost surely, 2^12006543 is an apocalyptic number.

12006543 is a deficient number, since it is larger than the sum of its proper divisors (4314993).

12006543 is a wasteful number, since it uses less digits than its factorization.

12006543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 12006543 is about 3465.0458871420. The cubic root of 12006543 is about 228.9844513130.

Adding to 12006543 its reverse (34560021), we get a palindrome (46566564).

The spelling of 12006543 in words is "twelve million, six thousand, five hundred forty-three".