12143943 has 24 divisors (see below), whose sum is σ = 20431008. Its totient is φ = 6806592.

The previous prime is 12143939. The next prime is 12143969. The reversal of 12143943 is 34934121.

It is not a de Polignac number, because 12143943 - 2² = 12143939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143993) 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 23 ways as a sum of consecutive naturals, for example, 1521 + ... + 5157.

It is an arithmetic number, because the mean of its divisors is an integer number (851292).

Almost surely, 2^12143943 is an apocalyptic number.

12143943 is a deficient number, since it is larger than the sum of its proper divisors (8287065).

12143943 is a wasteful number, since it uses less digits than its factorization.

12143943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703 (or 3700 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 12143943 is about 3484.8160640126. The cubic root of 12143943 is about 229.8546214239.

The spelling of 12143943 in words is "twelve million, one hundred forty-three thousand, nine hundred forty-three".