12143846 has 16 divisors (see below), whose sum is σ = 21400848. Its totient is φ = 5095200.

The previous prime is 12143843. The next prime is 12143849. The reversal of 12143846 is 64834121.

It is an interprime number because it is at equal distance from previous prime (12143843) and next prime (12143849).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143843) 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 7 ways as a sum of consecutive naturals, for example, 20945 + ... + 21516.

It is an arithmetic number, because the mean of its divisors is an integer number (1337553).

Almost surely, 2^12143846 is an apocalyptic number.

12143846 is a deficient number, since it is larger than the sum of its proper divisors (9257002).

12143846 is a wasteful number, since it uses less digits than its factorization.

12143846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42487.

The product of its digits is 4608, while the sum is 29.

The square root of 12143846 is about 3484.8021464640. The cubic root of 12143846 is about 229.8540094327.

Adding to 12143846 its reverse (64834121), we get a palindrome (76977967).

The spelling of 12143846 in words is "twelve million, one hundred forty-three thousand, eight hundred forty-six".