12140543 has 2 divisors, whose sum is σ = 12140544. Its totient is φ = 12140542.

The previous prime is 12140539. The next prime is 12140549. The reversal of 12140543 is 34504121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12140543 - 2² = 12140539 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12140549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6070271 + 6070272.

It is an arithmetic number, because the mean of its divisors is an integer number (6070272).

Almost surely, 2^12140543 is an apocalyptic number.

12140543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12140543 is an equidigital number, since it uses as much as digits as its factorization.

12140543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12140543 is about 3484.3281992373. The cubic root of 12140543 is about 229.8331682419.

Adding to 12140543 its reverse (34504121), we get a palindrome (46644664).

The spelling of 12140543 in words is "twelve million, one hundred forty thousand, five hundred forty-three".