421166 has 8 divisors (see below), whose sum is σ = 652224. Its totient is φ = 203760.

The previous prime is 421163. The next prime is 421177. The reversal of 421166 is 661124.

It is a happy number.

421166 is digitally balanced in base 3, 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421163) 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 3 ways as a sum of consecutive naturals, for example, 3335 + ... + 3458.

It is an arithmetic number, because the mean of its divisors is an integer number (81528).

2⁴²¹¹⁶⁶ is an apocalyptic number.

421166 is a deficient number, since it is larger than the sum of its proper divisors (231058).

421166 is a wasteful number, since it uses less digits than its factorization.

421166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6826.

The product of its digits is 288, while the sum is 20.

The square root of 421166 is about 648.9730348790. The cubic root of 421166 is about 74.9579616266.

The spelling of 421166 in words is "four hundred twenty-one thousand, one hundred sixty-six".