12143255 has 4 divisors (see below), whose sum is σ = 14571912. Its totient is φ = 9714600.

The previous prime is 12143251. The next prime is 12143291. The reversal of 12143255 is 55234121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55234121 = 19 ⋅2907059.

It is not a de Polignac number, because 12143255 - 2² = 12143251 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 12143255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143251) 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, 1214321 + ... + 1214330.

It is an arithmetic number, because the mean of its divisors is an integer number (3642978).

Almost surely, 2^12143255 is an apocalyptic number.

12143255 is a deficient number, since it is larger than the sum of its proper divisors (2428657).

12143255 is an equidigital number, since it uses as much as digits as its factorization.

12143255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428656.

The product of its digits is 1200, while the sum is 23.

The square root of 12143255 is about 3484.7173486525. The cubic root of 12143255 is about 229.8502806326.

Adding to 12143255 its reverse (55234121), we get a palindrome (67377376).

The spelling of 12143255 in words is "twelve million, one hundred forty-three thousand, two hundred fifty-five".