304143242 has 32 divisors (see below), whose sum is σ = 511056000. Its totient is φ = 134785728.

The previous prime is 304143227. The next prime is 304143247. The reversal of 304143242 is 242341403.

It is a super-2 number, since 2×304143242² = 185006223308541128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (304143247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149033 + ... + 151059.

It is an arithmetic number, because the mean of its divisors is an integer number (15970500).

Almost surely, 2^304143242 is an apocalyptic number.

304143242 is a deficient number, since it is larger than the sum of its proper divisors (206912758).

304143242 is a wasteful number, since it uses less digits than its factorization.

304143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 304143242 is about 17439.7030364625. The cubic root of 304143242 is about 672.5006735666.

Adding to 304143242 its reverse (242341403), we get a palindrome (546484645).

The spelling of 304143242 in words is "three hundred four million, one hundred forty-three thousand, two hundred forty-two".