304421 has 4 divisors (see below), whose sum is σ = 327852. Its totient is φ = 280992.

The previous prime is 304417. The next prime is 304429. The reversal of 304421 is 124403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124403 = 31 ⋅4013.

It can be written as a sum of positive squares in 2 ways, for example, as 83521 + 220900 = 289^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 304421 - 2² = 304417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 8.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 304396 and 304405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11696 + ... + 11721.

It is an arithmetic number, because the mean of its divisors is an integer number (81963).

2³⁰⁴⁴²¹ is an apocalyptic number.

It is an amenable number.

304421 is a deficient number, since it is larger than the sum of its proper divisors (23431).

304421 is a wasteful number, since it uses less digits than its factorization.

304421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23430.

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

The square root of 304421 is about 551.7435998723. The cubic root of 304421 is about 67.2705331090.

Adding to 304421 its reverse (124403), we get a palindrome (428824).

The spelling of 304421 in words is "three hundred four thousand, four hundred twenty-one", and thus it is an iban number.