12147146 has 16 divisors (see below), whose sum is σ = 21047040. Its totient is φ = 5196480.

The previous prime is 12147139. The next prime is 12147173. The reversal of 12147146 is 64174121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15866 + ... + 16613.

It is an arithmetic number, because the mean of its divisors is an integer number (1315440).

Almost surely, 2^12147146 is an apocalyptic number.

12147146 is a deficient number, since it is larger than the sum of its proper divisors (8899894).

12147146 is a wasteful number, since it uses less digits than its factorization.

12147146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32509.

The product of its digits is 1344, while the sum is 26.

The square root of 12147146 is about 3485.2755988587. The cubic root of 12147146 is about 229.8748279206.

The spelling of 12147146 in words is "twelve million, one hundred forty-seven thousand, one hundred forty-six".