421230171 has 16 divisors (see below), whose sum is σ = 595865600. Its totient is φ = 263940768.

The previous prime is 421230151. The next prime is 421230179. The reversal of 421230171 is 171032124.

It is not a de Polignac number, because 421230171 - 2¹¹ = 421228123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421230179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21856 + ... + 36333.

It is an arithmetic number, because the mean of its divisors is an integer number (37241600).

Almost surely, 2^421230171 is an apocalyptic number.

421230171 is a deficient number, since it is larger than the sum of its proper divisors (174635429).

421230171 is a wasteful number, since it uses less digits than its factorization.

421230171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58338.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 421230171 is about 20523.8926863302. The cubic root of 421230171 is about 749.6176842571.

Adding to 421230171 its reverse (171032124), we get a palindrome (592262295).

The spelling of 421230171 in words is "four hundred twenty-one million, two hundred thirty thousand, one hundred seventy-one".