12143966 has 4 divisors (see below), whose sum is σ = 18215952. Its totient is φ = 6071982.

The previous prime is 12143939. The next prime is 12143969. The reversal of 12143966 is 66934121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3035990 + ... + 3035993.

It is an arithmetic number, because the mean of its divisors is an integer number (4553988).

Almost surely, 2^12143966 is an apocalyptic number.

12143966 is a deficient number, since it is larger than the sum of its proper divisors (6071986).

12143966 is an equidigital number, since it uses as much as digits as its factorization.

12143966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6071985.

The product of its digits is 7776, while the sum is 32.

The square root of 12143966 is about 3484.8193640417. The cubic root of 12143966 is about 229.8547665347.

The spelling of 12143966 in words is "twelve million, one hundred forty-three thousand, nine hundred sixty-six".