12143342441 has 4 divisors (see below), whose sum is σ = 12144466500. Its totient is φ = 12142218384.

The previous prime is 12143342423. The next prime is 12143342443. The reversal of 12143342441 is 14424334121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14424334121 = 18121 ⋅796001.

It can be written as a sum of positive squares in 2 ways, for example, as 1317980416 + 10825362025 = 36304^2 + 104045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12143342441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12143342443) 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, 545666 + ... + 567483.

It is an arithmetic number, because the mean of its divisors is an integer number (3036116625).

Almost surely, 2^12143342441 is an apocalyptic number.

It is an amenable number.

12143342441 is a deficient number, since it is larger than the sum of its proper divisors (1124059).

12143342441 is a wasteful number, since it uses less digits than its factorization.

12143342441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124058.

The product of its digits is 9216, while the sum is 29.

Adding to 12143342441 its reverse (14424334121), we get a palindrome (26567676562).

The spelling of 12143342441 in words is "twelve billion, one hundred forty-three million, three hundred forty-two thousand, four hundred forty-one".