304005421 has 8 divisors (see below), whose sum is σ = 317603520. Its totient is φ = 290439072.

The previous prime is 304005413. The next prime is 304005433. The reversal of 304005421 is 124500403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 304005421 - 2³ = 304005413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304045421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12825 + ... + 27793.

It is an arithmetic number, because the mean of its divisors is an integer number (39700440).

Almost surely, 2^304005421 is an apocalyptic number.

It is an amenable number.

304005421 is a deficient number, since it is larger than the sum of its proper divisors (13598099).

304005421 is a wasteful number, since it uses less digits than its factorization.

304005421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15875.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 304005421 is about 17435.7512313063. The cubic root of 304005421 is about 672.3990781055.

Adding to 304005421 its reverse (124500403), we get a palindrome (428505824).

The spelling of 304005421 in words is "three hundred four million, five thousand, four hundred twenty-one".