42191166 has 8 divisors (see below), whose sum is σ = 84382344. Its totient is φ = 14063720.

The previous prime is 42191159. The next prime is 42191179. The reversal of 42191166 is 66119124.

It is a happy number.

42191166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

42191166 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3515925 + ... + 3515936.

It is an arithmetic number, because the mean of its divisors is an integer number (10547793).

Almost surely, 2^42191166 is an apocalyptic number.

42191166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42191166 is a wasteful number, since it uses less digits than its factorization.

42191166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031866.

The product of its digits is 2592, while the sum is 30.

The square root of 42191166 is about 6495.4727310643. The cubic root of 42191166 is about 348.1292458228.

The spelling of 42191166 in words is "forty-two million, one hundred ninety-one thousand, one hundred sixty-six".