12166406 has 12 divisors (see below), whose sum is σ = 21229308. Its totient is φ = 5214132.

The previous prime is 12166393. The next prime is 12166421. The reversal of 12166406 is 60466121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 61976 + ... + 62171.

It is an arithmetic number, because the mean of its divisors is an integer number (1769109).

Almost surely, 2^12166406 is an apocalyptic number.

12166406 is a deficient number, since it is larger than the sum of its proper divisors (9062902).

12166406 is a wasteful number, since it uses less digits than its factorization.

12166406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124163 (or 124156 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 12166406 is about 3488.0375571373. The cubic root of 12166406 is about 229.9962570279.

The spelling of 12166406 in words is "twelve million, one hundred sixty-six thousand, four hundred six".