204424543 has 2 divisors, whose sum is σ = 204424544. Its totient is φ = 204424542.

The previous prime is 204424531. The next prime is 204424559. The reversal of 204424543 is 345424402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204424543 is a prime.

It is a super-3 number, since 3×204424543³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204424513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102212271 + 102212272.

It is an arithmetic number, because the mean of its divisors is an integer number (102212272).

Almost surely, 2^204424543 is an apocalyptic number.

204424543 is a deficient number, since it is larger than the sum of its proper divisors (1).

204424543 is an equidigital number, since it uses as much as digits as its factorization.

204424543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 204424543 is about 14297.7111105239. The cubic root of 204424543 is about 589.0846122979.

Adding to 204424543 its reverse (345424402), we get a palindrome (549848945).

It can be divided in two parts, 20442 and 4543, that multiplied together give a triangular number (92868006 = T₁₃₆₂₈).

The spelling of 204424543 in words is "two hundred four million, four hundred twenty-four thousand, five hundred forty-three".