304140921 has 8 divisors (see below), whose sum is σ = 463452864. Its totient is φ = 173794800.

The previous prime is 304140919. The next prime is 304140943. The reversal of 304140921 is 129041403.

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

It is not a de Polignac number, because 304140921 - 2¹ = 304140919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 304140891 and 304140900.

It is not an unprimeable number, because it can be changed into a prime (304140971) 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, 7241430 + ... + 7241471.

It is an arithmetic number, because the mean of its divisors is an integer number (57931608).

Almost surely, 2^304140921 is an apocalyptic number.

It is an amenable number.

304140921 is a deficient number, since it is larger than the sum of its proper divisors (159311943).

304140921 is a wasteful number, since it uses less digits than its factorization.

304140921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14482911.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 304140921 is about 17439.6364927713. The cubic root of 304140921 is about 672.4989628836.

The spelling of 304140921 in words is "three hundred four million, one hundred forty thousand, nine hundred twenty-one".