204243406 has 8 divisors (see below), whose sum is σ = 324386640. Its totient is φ = 96114528.

The previous prime is 204243371. The next prime is 204243439. The reversal of 204243406 is 604342402.

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, 3003546 + ... + 3003613.

It is an arithmetic number, because the mean of its divisors is an integer number (40548330).

Almost surely, 2^204243406 is an apocalyptic number.

204243406 is a deficient number, since it is larger than the sum of its proper divisors (120143234).

204243406 is a wasteful number, since it uses less digits than its factorization.

204243406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007178.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 204243406 is about 14291.3752312365. The cubic root of 204243406 is about 588.9105683698.

Adding to 204243406 its reverse (604342402), we get a palindrome (808585808).

The spelling of 204243406 in words is "two hundred four million, two hundred forty-three thousand, four hundred six".