12443421041 has 4 divisors (see below), whose sum is σ = 12479281392. Its totient is φ = 12407560692.

The previous prime is 12443420999. The next prime is 12443421047. The reversal of 12443421041 is 14012434421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14012434421 = 191 ⋅73363531.

It is a cyclic number.

It is not a de Polignac number, because 12443421041 - 2¹⁴ = 12443404657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12443421041.

It is not an unprimeable number, because it can be changed into a prime (12443421047) 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 in 3 ways as a sum of consecutive naturals, for example, 17929655 + ... + 17930348.

It is an arithmetic number, because the mean of its divisors is an integer number (3119820348).

Almost surely, 2^12443421041 is an apocalyptic number.

It is an amenable number.

12443421041 is a deficient number, since it is larger than the sum of its proper divisors (35860351).

12443421041 is an equidigital number, since it uses as much as digits as its factorization.

12443421041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35860350.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 12443421041 its reverse (14012434421), we get a palindrome (26455855462).

The spelling of 12443421041 in words is "twelve billion, four hundred forty-three million, four hundred twenty-one thousand, forty-one".