12143005 has 8 divisors (see below), whose sum is σ = 16653312. Its totient is φ = 8326608.

The previous prime is 12142997. The next prime is 12143009. The reversal of 12143005 is 50034121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12143005 - 2³ = 12142997 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 12143005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143009) 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, 173437 + ... + 173506.

It is an arithmetic number, because the mean of its divisors is an integer number (2081664).

Almost surely, 2^12143005 is an apocalyptic number.

It is an amenable number.

12143005 is a deficient number, since it is larger than the sum of its proper divisors (4510307).

12143005 is an equidigital number, since it uses as much as digits as its factorization.

12143005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346955.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12143005 is about 3484.6814775529. The cubic root of 12143005 is about 229.8487032696.

Adding to 12143005 its reverse (50034121), we get a palindrome (62177126).

The spelling of 12143005 in words is "twelve million, one hundred forty-three thousand, five".