243440045 has 8 divisors (see below), whose sum is σ = 292481280. Its totient is φ = 194516560.

The previous prime is 243440039. The next prime is 243440047. The reversal of 243440045 is 540044342.

243440045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 243440045 - 2²⁰ = 242391469 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 243439996 and 243440023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243440047) 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, 24821 + ... + 33210.

It is an arithmetic number, because the mean of its divisors is an integer number (36560160).

Almost surely, 2^243440045 is an apocalyptic number.

It is an amenable number.

243440045 is a deficient number, since it is larger than the sum of its proper divisors (49041235).

243440045 is an equidigital number, since it uses as much as digits as its factorization.

243440045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58875.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 243440045 is about 15602.5653339443. The cubic root of 243440045 is about 624.4015989821.

Adding to 243440045 its reverse (540044342), we get a palindrome (783484387).

The spelling of 243440045 in words is "two hundred forty-three million, four hundred forty thousand, forty-five".