204042406 has 8 divisors (see below), whose sum is σ = 322172280. Its totient is φ = 96651648.

The previous prime is 204042389. The next prime is 204042431. The reversal of 204042406 is 604240402.

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

It is a congruent number.

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, 2684731 + ... + 2684806.

It is an arithmetic number, because the mean of its divisors is an integer number (40271535).

Almost surely, 2^204042406 is an apocalyptic number.

204042406 is a deficient number, since it is larger than the sum of its proper divisors (118129874).

204042406 is a wasteful number, since it uses less digits than its factorization.

204042406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369558.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 204042406 is about 14284.3412868777. The cubic root of 204042406 is about 588.7173187594.

Adding to 204042406 its reverse (604240402), we get a palindrome (808282808).

The spelling of 204042406 in words is "two hundred four million, forty-two thousand, four hundred six".