421371 has 6 divisors (see below), whose sum is σ = 608660. Its totient is φ = 280908.

The previous prime is 421361. The next prime is 421381. The reversal of 421371 is 173124.

421371 = T₁₆₃ + T₁₆₄ + ... + T₁₈₉.

It is an interprime number because it is at equal distance from previous prime (421361) and next prime (421381).

It is not a de Polignac number, because 421371 - 2⁵ = 421339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23401 + ... + 23418.

2⁴²¹³⁷¹ is an apocalyptic number.

421371 is a deficient number, since it is larger than the sum of its proper divisors (187289).

421371 is a wasteful number, since it uses less digits than its factorization.

421371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46825 (or 46822 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 421371 is about 649.1309575117. The cubic root of 421371 is about 74.9701214319.

Adding to 421371 its reverse (173124), we get a palindrome (594495).

The spelling of 421371 in words is "four hundred twenty-one thousand, three hundred seventy-one", and thus it is an iban number.