304642 has 8 divisors (see below), whose sum is σ = 492156. Its totient is φ = 140592.

The previous prime is 304631. The next prime is 304643. The reversal of 304642 is 246403.

It can be written as a sum of positive squares in 2 ways, for example, as 219961 + 84681 = 469^2 + 291^2 .

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

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (304643) by changing a digit.

304642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5833 + ... + 5884.

2³⁰⁴⁶⁴² is an apocalyptic number.

304642 is a deficient number, since it is larger than the sum of its proper divisors (187514).

304642 is a wasteful number, since it uses less digits than its factorization.

304642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11732.

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

The square root of 304642 is about 551.9438377226. The cubic root of 304642 is about 67.2868079298.

It can be divided in two parts, 304 and 642, that added together give a triangular number (946 = T₄₃).

The spelling of 304642 in words is "three hundred four thousand, six hundred forty-two".