166442204 has 24 divisors (see below), whose sum is σ = 311189760. Its totient is φ = 77661936.

The previous prime is 166442167. The next prime is 166442209. The reversal of 166442204 is 402244661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166442209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11252 + ... + 21435.

It is an arithmetic number, because the mean of its divisors is an integer number (12966240).

Almost surely, 2^166442204 is an apocalyptic number.

It is an amenable number.

166442204 is a deficient number, since it is larger than the sum of its proper divisors (144747556).

166442204 is a wasteful number, since it uses less digits than its factorization.

166442204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32777 (or 32775 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 166442204 is about 12901.2481566707. The cubic root of 166442204 is about 550.0740440258.

Adding to 166442204 its reverse (402244661), we get a palindrome (568686865).

The spelling of 166442204 in words is "one hundred sixty-six million, four hundred forty-two thousand, two hundred four".