12041043243 has 4 divisors (see below), whose sum is σ = 16054724328. Its totient is φ = 8027362160.

The previous prime is 12041043241. The next prime is 12041043257. The reversal of 12041043243 is 34234014021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34234014021 = 3 ⋅11411338007.

It is a cyclic number.

It is not a de Polignac number, because 12041043243 - 2¹ = 12041043241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12041043241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2006840538 + ... + 2006840543.

It is an arithmetic number, because the mean of its divisors is an integer number (4013681082).

Almost surely, 2^12041043243 is an apocalyptic number.

12041043243 is a deficient number, since it is larger than the sum of its proper divisors (4013681085).

12041043243 is an equidigital number, since it uses as much as digits as its factorization.

12041043243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013681084.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12041043243 its reverse (34234014021), we get a palindrome (46275057264).

The spelling of 12041043243 in words is "twelve billion, forty-one million, forty-three thousand, two hundred forty-three".