204243404342403 has 8 divisors (see below), whose sum is σ = 281715040472400. Its totient is φ = 131467018887008.

The previous prime is 204243404342399. The next prime is 204243404342423. The reversal of 204243404342403 is 304243404342402.

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

It is a cyclic number.

It is not a de Polignac number, because 204243404342403 - 2² = 204243404342399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204243404342423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173812668548 + ... + 1173812668721.

It is an arithmetic number, because the mean of its divisors is an integer number (35214380059050).

Almost surely, 2^{204243404342403} is an apocalyptic number.

204243404342403 is a deficient number, since it is larger than the sum of its proper divisors (77471636129997).

204243404342403 is a wasteful number, since it uses less digits than its factorization.

204243404342403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347625337301.

The product of its (nonzero) digits is 884736, while the sum is 39.

Adding to 204243404342403 its reverse (304243404342402), we get a palindrome (508486808684805).

Subtracting 204243404342403 from its reverse (304243404342402), we obtain a palindrome (99999999999999).

The spelling of 204243404342403 in words is "two hundred four trillion, two hundred forty-three billion, four hundred four million, three hundred forty-two thousand, four hundred three".