304042145 has 12 divisors (see below), whose sum is σ = 401034900. Its totient is φ = 221121120.

The previous prime is 304042139. The next prime is 304042147. The reversal of 304042145 is 541240403.

It can be written as a sum of positive squares in 2 ways, for example, as 74943649 + 229098496 = 8657^2 + 15136^2 .

It is not a de Polignac number, because 304042145 - 2²⁰ = 302993569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 304042145.

It is not an unprimeable number, because it can be changed into a prime (304042147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250670 + ... + 251879.

It is an arithmetic number, because the mean of its divisors is an integer number (33419575).

Almost surely, 2^304042145 is an apocalyptic number.

It is an amenable number.

304042145 is a deficient number, since it is larger than the sum of its proper divisors (96992755).

304042145 is a wasteful number, since it uses less digits than its factorization.

304042145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502576 (or 502565 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 304042145 is about 17436.8043230404. The cubic root of 304042145 is about 672.4261523919.

Adding to 304042145 its reverse (541240403), we get a palindrome (845282548).

The spelling of 304042145 in words is "three hundred four million, forty-two thousand, one hundred forty-five".