12192147 has 16 divisors (see below), whose sum is σ = 19704960. Its totient is φ = 7389000.

The previous prime is 12192143. The next prime is 12192157. The reversal of 12192147 is 74129121.

It is not a de Polignac number, because 12192147 - 2² = 12192143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12192147.

It is not an unprimeable number, because it can be changed into a prime (12192143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20229 + ... + 20822.

It is an arithmetic number, because the mean of its divisors is an integer number (1231560).

Almost surely, 2^12192147 is an apocalyptic number.

12192147 is a deficient number, since it is larger than the sum of its proper divisors (7512813).

12192147 is a wasteful number, since it uses less digits than its factorization.

12192147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41071 (or 41065 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 12192147 is about 3491.7255046753. The cubic root of 12192147 is about 230.1583471650.

The spelling of 12192147 in words is "twelve million, one hundred ninety-two thousand, one hundred forty-seven".