12000187 has 4 divisors (see below), whose sum is σ = 12203640. Its totient is φ = 11796736.

The previous prime is 12000133. The next prime is 12000239. The reversal of 12000187 is 78100021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12000187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12000127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101638 + ... + 101755.

It is an arithmetic number, because the mean of its divisors is an integer number (3050910).

Almost surely, 2^12000187 is an apocalyptic number.

12000187 is a deficient number, since it is larger than the sum of its proper divisors (203453).

12000187 is an equidigital number, since it uses as much as digits as its factorization.

12000187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203452.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 12000187 is about 3464.1286061577. The cubic root of 12000187 is about 228.9440377354.

The spelling of 12000187 in words is "twelve million, one hundred eighty-seven", and thus it is an aban number.