12442543 has 8 divisors (see below), whose sum is σ = 12654000. Its totient is φ = 12233088.

The previous prime is 12442531. The next prime is 12442553. The reversal of 12442543 is 34524421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12442543 - 2¹³ = 12434351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442513) 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, 16468 + ... + 17206.

It is an arithmetic number, because the mean of its divisors is an integer number (1581750).

Almost surely, 2^12442543 is an apocalyptic number.

12442543 is a deficient number, since it is larger than the sum of its proper divisors (211457).

12442543 is a wasteful number, since it uses less digits than its factorization.

12442543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001.

The product of its digits is 3840, while the sum is 25.

The square root of 12442543 is about 3527.3989000395. The cubic root of 12442543 is about 231.7233064301.

Adding to 12442543 its reverse (34524421), we get a palindrome (46966964).

The spelling of 12442543 in words is "twelve million, four hundred forty-two thousand, five hundred forty-three".