8140543 has 4 divisors (see below), whose sum is σ = 8149120. Its totient is φ = 8131968.

The previous prime is 8140537. The next prime is 8140553. The reversal of 8140543 is 3450418.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8140543 - 2¹³ = 8132351 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 (8140523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2658 + ... + 4831.

It is an arithmetic number, because the mean of its divisors is an integer number (2037280).

Almost surely, 2^8140543 is an apocalyptic number.

8140543 is a deficient number, since it is larger than the sum of its proper divisors (8577).

8140543 is a wasteful number, since it uses less digits than its factorization.

8140543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8576.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 8140543 is about 2853.1636826512. The cubic root of 8140543 is about 201.1643993810.

The spelling of 8140543 in words is "eight million, one hundred forty thousand, five hundred forty-three".