243045040 has 40 divisors (see below), whose sum is σ = 645806880. Its totient is φ = 83329536.

The previous prime is 243045029. The next prime is 243045059. The reversal of 243045040 is 40540342.

243045040 = T₁₄ + T₁₅ + ... + T₁₁₃₃.

It is a happy number.

243045040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216445 + ... + 217564.

It is an arithmetic number, because the mean of its divisors is an integer number (16145172).

Almost surely, 2^243045040 is an apocalyptic number.

243045040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243045040 is an abundant number, since it is smaller than the sum of its proper divisors (402761840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243045040 is a wasteful number, since it uses less digits than its factorization.

243045040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434029 (or 434023 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 243045040 is about 15589.9018598579. The cubic root of 243045040 is about 624.0636988447.

Adding to 243045040 its reverse (40540342), we get a palindrome (283585382).

The spelling of 243045040 in words is "two hundred forty-three million, forty-five thousand, forty".