421204 has 24 divisors (see below), whose sum is σ = 862400. Its totient is φ = 179928.

The previous prime is 421189. The next prime is 421207. The reversal of 421204 is 402124.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219 + ... + 1525.

2⁴²¹²⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431200).

421204 is an abundant number, since it is smaller than the sum of its proper divisors (441196).

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

421204 is a wasteful number, since it uses less digits than its factorization.

421204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 421204 is about 649.0023112440. The cubic root of 421204 is about 74.9602159371.

Adding to 421204 its reverse (402124), we get a palindrome (823328).

It can be divided in two parts, 42120 and 4, that added together give a palindrome (42124).

The spelling of 421204 in words is "four hundred twenty-one thousand, two hundred four", and thus it is an iban number.