12143042017 has 4 divisors (see below), whose sum is σ = 12143278080. Its totient is φ = 12142805956.

The previous prime is 12143042003. The next prime is 12143042089. The reversal of 12143042017 is 71024034121.

12143042017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 71024034121 = 19 ⋅3738107059.

It is a cyclic number.

It is not a de Polignac number, because 12143042017 - 2³¹ = 9995558369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12143041982 and 12143042000.

It is not an unprimeable number, because it can be changed into a prime (12143072017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4417 + ... + 155902.

It is an arithmetic number, because the mean of its divisors is an integer number (3035819520).

Almost surely, 2^12143042017 is an apocalyptic number.

It is an amenable number.

12143042017 is a deficient number, since it is larger than the sum of its proper divisors (236063).

12143042017 is an equidigital number, since it uses as much as digits as its factorization.

12143042017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236062.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 12143042017 its reverse (71024034121), we get a palindrome (83167076138).

The spelling of 12143042017 in words is "twelve billion, one hundred forty-three million, forty-two thousand, seventeen".