204364243 has 2 divisors, whose sum is σ = 204364244. Its totient is φ = 204364242.

The previous prime is 204364219. The next prime is 204364249. The reversal of 204364243 is 342463402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204364243 - 2⁵ = 204364211 is a prime.

It is not a weakly prime, because it can be changed into another prime (204364249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102182121 + 102182122.

It is an arithmetic number, because the mean of its divisors is an integer number (102182122).

Almost surely, 2^204364243 is an apocalyptic number.

204364243 is a deficient number, since it is larger than the sum of its proper divisors (1).

204364243 is an equidigital number, since it uses as much as digits as its factorization.

204364243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 204364243 is about 14295.6022258595. The cubic root of 204364243 is about 589.0266849818.

The spelling of 204364243 in words is "two hundred four million, three hundred sixty-four thousand, two hundred forty-three".