204868642 has 8 divisors (see below), whose sum is σ = 335239632. Its totient is φ = 93122100.

The previous prime is 204868639. The next prime is 204868679. The reversal of 204868642 is 246868402.

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

It is a junction number, because it is equal to n+sod(n) for n = 204868595 and 204868604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4656084 + ... + 4656127.

It is an arithmetic number, because the mean of its divisors is an integer number (41904954).

Almost surely, 2^204868642 is an apocalyptic number.

204868642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

204868642 is a deficient number, since it is larger than the sum of its proper divisors (130370990).

204868642 is a wasteful number, since it uses less digits than its factorization.

204868642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9312224.

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 204868642 is about 14313.2331078621. The cubic root of 204868642 is about 589.5108864083.

The spelling of 204868642 in words is "two hundred four million, eight hundred sixty-eight thousand, six hundred forty-two".