12481543 has 4 divisors (see below), whose sum is σ = 12818920. Its totient is φ = 12144168.

The previous prime is 12481541. The next prime is 12481559. The reversal of 12481543 is 34518421.

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 12481543 - 2¹ = 12481541 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 (12481541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168633 + ... + 168706.

It is an arithmetic number, because the mean of its divisors is an integer number (3204730).

Almost surely, 2^12481543 is an apocalyptic number.

12481543 is a deficient number, since it is larger than the sum of its proper divisors (337377).

12481543 is an equidigital number, since it uses as much as digits as its factorization.

12481543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337376.

The product of its digits is 3840, while the sum is 28.

The square root of 12481543 is about 3532.9227277143. The cubic root of 12481543 is about 231.9651590070.

Adding to 12481543 its reverse (34518421), we get a palindrome (46999964).

The spelling of 12481543 in words is "twelve million, four hundred eighty-one thousand, five hundred forty-three".