243045705 has 16 divisors (see below), whose sum is σ = 444426624. Its totient is φ = 111106560.

The previous prime is 243045703. The next prime is 243045707. The reversal of 243045705 is 507540342.

It is an interprime number because it is at equal distance from previous prime (243045703) and next prime (243045707).

It is not a de Polignac number, because 243045705 - 2¹ = 243045703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243045703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1157256 + ... + 1157465.

It is an arithmetic number, because the mean of its divisors is an integer number (27776664).

Almost surely, 2^243045705 is an apocalyptic number.

It is an amenable number.

243045705 is a deficient number, since it is larger than the sum of its proper divisors (201380919).

243045705 is a wasteful number, since it uses less digits than its factorization.

243045705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314736.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 243045705 is about 15589.9231877518. The cubic root of 243045705 is about 624.0642680149.

The spelling of 243045705 in words is "two hundred forty-three million, forty-five thousand, seven hundred five".