12142185 has 16 divisors (see below), whose sum is σ = 21193920. Its totient is φ = 5887040.

The previous prime is 12142177. The next prime is 12142217. The reversal of 12142185 is 58124121.

12142185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12142185 - 2³ = 12142177 is a prime.

It is a Curzon 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, 36630 + ... + 36959.

It is an arithmetic number, because the mean of its divisors is an integer number (1324620).

Almost surely, 2^12142185 is an apocalyptic number.

12142185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12142185 is a deficient number, since it is larger than the sum of its proper divisors (9051735).

12142185 is a wasteful number, since it uses less digits than its factorization.

12142185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73608.

The product of its digits is 640, while the sum is 24.

The square root of 12142185 is about 3484.5638177540. The cubic root of 12142185 is about 229.8435293669.

The spelling of 12142185 in words is "twelve million, one hundred forty-two thousand, one hundred eighty-five".