204542842 has 8 divisors (see below), whose sum is σ = 350644896. Its totient is φ = 87661212.

The previous prime is 204542839. The next prime is 204542869. The reversal of 204542842 is 248245402.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7305088 + ... + 7305115.

It is an arithmetic number, because the mean of its divisors is an integer number (43830612).

Almost surely, 2^204542842 is an apocalyptic number.

204542842 is a deficient number, since it is larger than the sum of its proper divisors (146102054).

204542842 is a wasteful number, since it uses less digits than its factorization.

204542842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14610212.

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 204542842 is about 14301.8475030326. The cubic root of 204542842 is about 589.1982233826.

The spelling of 204542842 in words is "two hundred four million, five hundred forty-two thousand, eight hundred forty-two".