204435043 has 2 divisors, whose sum is σ = 204435044. Its totient is φ = 204435042.

The previous prime is 204435031. The next prime is 204435053. The reversal of 204435043 is 340534402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204435043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204434999 and 204435017.

It is not a weakly prime, because it can be changed into another prime (204435053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102217521 + 102217522.

It is an arithmetic number, because the mean of its divisors is an integer number (102217522).

Almost surely, 2^204435043 is an apocalyptic number.

204435043 is a deficient number, since it is larger than the sum of its proper divisors (1).

204435043 is an equidigital number, since it uses as much as digits as its factorization.

204435043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 204435043 is about 14298.0782974496. The cubic root of 204435043 is about 589.0946979795.

Adding to 204435043 its reverse (340534402), we get a palindrome (544969445).

The spelling of 204435043 in words is "two hundred four million, four hundred thirty-five thousand, forty-three".