304002043021 has 8 divisors (see below), whose sum is σ = 315082706840. Its totient is φ = 293072136768.

The previous prime is 304002042961. The next prime is 304002043043. The reversal of 304002043021 is 120340200403.

It can be written as a sum of positive squares in 4 ways, for example, as 56744480521 + 247257562500 = 238211^2 + 497250^2 .

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-304002043021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304002043021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304002043921) 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, 37685286 + ... + 37693351.

It is an arithmetic number, because the mean of its divisors is an integer number (39385338355).

Almost surely, 2^304002043021 is an apocalyptic number.

It is an amenable number.

304002043021 is a deficient number, since it is larger than the sum of its proper divisors (11080663819).

304002043021 is a wasteful number, since it uses less digits than its factorization.

304002043021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75378783.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 304002043021 its reverse (120340200403), we get a palindrome (424342243424).

The spelling of 304002043021 in words is "three hundred four billion, two million, forty-three thousand, twenty-one".