421304 has 16 divisors (see below), whose sum is σ = 850920. Its totient is φ = 194400.

The previous prime is 421303. The next prime is 421313. The reversal of 421304 is 403124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421303) 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, 1922 + ... + 2129.

2⁴²¹³⁰⁴ is an apocalyptic number.

It is an amenable number.

421304 is an abundant number, since it is smaller than the sum of its proper divisors (429616).

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

421304 is a wasteful number, since it uses less digits than its factorization.

421304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070 (or 4066 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 421304 is about 649.0793479999. The cubic root of 421304 is about 74.9661476855.

Adding to 421304 its reverse (403124), we get a palindrome (824428).

The spelling of 421304 in words is "four hundred twenty-one thousand, three hundred four", and thus it is an iban number.