12243187 has 8 divisors (see below), whose sum is σ = 13381632. Its totient is φ = 11109000.

The previous prime is 12243167. The next prime is 12243193. The reversal of 12243187 is 78134221.

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 12243187 - 2²³ = 3854579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12243157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10062 + ... + 11212.

It is an arithmetic number, because the mean of its divisors is an integer number (1672704).

Almost surely, 2^12243187 is an apocalyptic number.

12243187 is a deficient number, since it is larger than the sum of its proper divisors (1138445).

12243187 is a wasteful number, since it uses less digits than its factorization.

12243187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129.

The product of its digits is 2688, while the sum is 28.

The square root of 12243187 is about 3499.0265789216. The cubic root of 12243187 is about 230.4790707560.

The spelling of 12243187 in words is "twelve million, two hundred forty-three thousand, one hundred eighty-seven".