12045543 has 8 divisors (see below), whose sum is σ = 16157568. Its totient is φ = 7981944.

The previous prime is 12045521. The next prime is 12045589. The reversal of 12045543 is 34554021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12045543 - 2¹⁰ = 12044519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12045343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11521 + ... + 12522.

It is an arithmetic number, because the mean of its divisors is an integer number (2019696).

Almost surely, 2^12045543 is an apocalyptic number.

12045543 is a deficient number, since it is larger than the sum of its proper divisors (4112025).

12045543 is a wasteful number, since it uses less digits than its factorization.

12045543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24213.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 12045543 is about 3470.6689556914. The cubic root of 12045543 is about 229.2321146549.

Adding to 12045543 its reverse (34554021), we get a palindrome (46599564).

The spelling of 12045543 in words is "twelve million, forty-five thousand, five hundred forty-three".