304042305 has 48 divisors (see below), whose sum is σ = 567665280. Its totient is φ = 138555648.

The previous prime is 304042259. The next prime is 304042309. The reversal of 304042305 is 503240403.

It is a happy number.

It is not a de Polignac number, because 304042305 - 2⁶ = 304042241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (304042309) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 417852 + ... + 418578.

It is an arithmetic number, because the mean of its divisors is an integer number (11826360).

Almost surely, 2^304042305 is an apocalyptic number.

304042305 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

304042305 is a deficient number, since it is larger than the sum of its proper divisors (263622975).

304042305 is a wasteful number, since it uses less digits than its factorization.

304042305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318 (or 1311 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 304042305 is about 17436.8089110364. The cubic root of 304042305 is about 672.4262703450.

Adding to 304042305 its reverse (503240403), we get a palindrome (807282708).

The spelling of 304042305 in words is "three hundred four million, forty-two thousand, three hundred five".