12143885 has 16 divisors (see below), whose sum is σ = 16377984. Its totient is φ = 8576832.

The previous prime is 12143863. The next prime is 12143891. The reversal of 12143885 is 58834121.

12143885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12143885 - 2¹² = 12139789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2567 + ... + 5556.

It is an arithmetic number, because the mean of its divisors is an integer number (1023624).

Almost surely, 2^12143885 is an apocalyptic number.

It is an amenable number.

12143885 is a deficient number, since it is larger than the sum of its proper divisors (4234099).

12143885 is a wasteful number, since it uses less digits than its factorization.

12143885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164.

The product of its digits is 7680, while the sum is 32.

The square root of 12143885 is about 3484.8077421861. The cubic root of 12143885 is about 229.8542554914.

The spelling of 12143885 in words is "twelve million, one hundred forty-three thousand, eight hundred eighty-five".