12026143 has 4 divisors (see below), whose sum is σ = 12050280. Its totient is φ = 12002008.

The previous prime is 12026129. The next prime is 12026149. The reversal of 12026143 is 34162021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34162021 = 167 ⋅204563.

It is a cyclic number.

It is not a de Polignac number, because 12026143 - 2⁹ = 12025631 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 12026143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12026149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11305 + ... + 12322.

It is an arithmetic number, because the mean of its divisors is an integer number (3012570).

Almost surely, 2^12026143 is an apocalyptic number.

12026143 is a deficient number, since it is larger than the sum of its proper divisors (24137).

12026143 is an equidigital number, since it uses as much as digits as its factorization.

12026143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24136.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 12026143 is about 3467.8729792194. The cubic root of 12026143 is about 229.1089849463.

Adding to 12026143 its reverse (34162021), we get a palindrome (46188164).

The spelling of 12026143 in words is "twelve million, twenty-six thousand, one hundred forty-three".