12105140543 has 8 divisors (see below), whose sum is σ = 12204860976. Its totient is φ = 12005531200.

The previous prime is 12105140501. The next prime is 12105140549. The reversal of 12105140543 is 34504150121.

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 12105140543 - 2⁸ = 12105140287 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 (12105140549) 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, 198605 + ... + 252297.

It is an arithmetic number, because the mean of its divisors is an integer number (1525607622).

Almost surely, 2^12105140543 is an apocalyptic number.

12105140543 is a deficient number, since it is larger than the sum of its proper divisors (99720433).

12105140543 is a wasteful number, since it uses less digits than its factorization.

12105140543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55545.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 12105140543 its reverse (34504150121), we get a palindrome (46609290664).

The spelling of 12105140543 in words is "twelve billion, one hundred five million, one hundred forty thousand, five hundred forty-three".