421168 has 20 divisors (see below), whose sum is σ = 890568. Its totient is φ = 191360.

The previous prime is 421163. The next prime is 421177. The reversal of 421168 is 861124.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (421163) by changing a digit.

421168 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021 + ... + 1372.

2⁴²¹¹⁶⁸ is an apocalyptic number.

It is an amenable number.

421168 is an abundant number, since it is smaller than the sum of its proper divisors (469400).

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

421168 is a wasteful number, since it uses less digits than its factorization.

421168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412 (or 2406 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 421168 is about 648.9745757732. The cubic root of 421168 is about 74.9580802779.

It can be divided in two parts, 42116 and 8, that added together give a palindrome (42124).

The spelling of 421168 in words is "four hundred twenty-one thousand, one hundred sixty-eight".