304142321 has 8 divisors (see below), whose sum is σ = 348138624. Its totient is φ = 260282880.

The previous prime is 304142303. The next prime is 304142353. The reversal of 304142321 is 123241403.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304142321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304142293 and 304142302.

It is not an unprimeable number, because it can be changed into a prime (304142221) 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, 29405 + ... + 38378.

It is an arithmetic number, because the mean of its divisors is an integer number (43517328).

Almost surely, 2^304142321 is an apocalyptic number.

It is an amenable number.

304142321 is a deficient number, since it is larger than the sum of its proper divisors (43996303).

304142321 is an equidigital number, since it uses as much as digits as its factorization.

304142321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68431.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 304142321 is about 17439.6766311764. The cubic root of 304142321 is about 672.4999947486.

Adding to 304142321 its reverse (123241403), we get a palindrome (427383724).

The spelling of 304142321 in words is "three hundred four million, one hundred forty-two thousand, three hundred twenty-one".