421171 has 4 divisors (see below), whose sum is σ = 432592. Its totient is φ = 409752.

The previous prime is 421163. The next prime is 421177. The reversal of 421171 is 171124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421171 - 2³ = 421163 is a prime.

It is a super-2 number, since 2×421171² = 354770022482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421177) 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, 5655 + ... + 5728.

It is an arithmetic number, because the mean of its divisors is an integer number (108148).

2⁴²¹¹⁷¹ is an apocalyptic number.

421171 is a deficient number, since it is larger than the sum of its proper divisors (11421).

421171 is a wasteful number, since it uses less digits than its factorization.

421171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11420.

The product of its digits is 56, while the sum is 16.

The square root of 421171 is about 648.9768871077. The cubic root of 421171 is about 74.9582582541.

Adding to 421171 its reverse (171124), we get a palindrome (592295).

Subtracting from 421171 its reverse (171124), we obtain a cube (250047 = 63³).

The spelling of 421171 in words is "four hundred twenty-one thousand, one hundred seventy-one", and thus it is an iban number.