243004043 has 4 divisors (see below), whose sum is σ = 243063408. Its totient is φ = 242944680.

The previous prime is 243003989. The next prime is 243004057. The reversal of 243004043 is 340400342.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243004043 - 2⁶ = 243003979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243004063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23048 + ... + 31893.

It is an arithmetic number, because the mean of its divisors is an integer number (60765852).

Almost surely, 2^243004043 is an apocalyptic number.

243004043 is a deficient number, since it is larger than the sum of its proper divisors (59365).

243004043 is an equidigital number, since it uses as much as digits as its factorization.

243004043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59364.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 243004043 is about 15588.5869468660. The cubic root of 243004043 is about 624.0286077107.

Adding to 243004043 its reverse (340400342), we get a palindrome (583404385).

The spelling of 243004043 in words is "two hundred forty-three million, four thousand, forty-three".