421185 has 16 divisors (see below), whose sum is σ = 690624. Its totient is φ = 219072.

The previous prime is 421181. The next prime is 421189. The reversal of 421185 is 581124.

It is an interprime number because it is at equal distance from previous prime (421181) and next prime (421189).

It is not a de Polignac number, because 421185 - 2² = 421181 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421185.

It is not an unprimeable number, because it can be changed into a prime (421181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319 + ... + 971.

It is an arithmetic number, because the mean of its divisors is an integer number (43164).

2⁴²¹¹⁸⁵ is an apocalyptic number.

It is an amenable number.

421185 is a deficient number, since it is larger than the sum of its proper divisors (269439).

421185 is a wasteful number, since it uses less digits than its factorization.

421185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704.

The product of its digits is 320, while the sum is 21.

The square root of 421185 is about 648.9876732265. The cubic root of 421185 is about 74.9590887988.

It can be divided in two parts, 421 and 185, that added together give a palindrome (606).

The spelling of 421185 in words is "four hundred twenty-one thousand, one hundred eighty-five".