243042245 has 8 divisors (see below), whose sum is σ = 292761216. Its totient is φ = 193693456.

The previous prime is 243042229. The next prime is 243042257. The reversal of 243042245 is 542240342.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 243042245 - 2⁴ = 243042229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 91097 + ... + 93726.

It is an arithmetic number, because the mean of its divisors is an integer number (36595152).

Almost surely, 2^243042245 is an apocalyptic number.

It is an amenable number.

243042245 is a deficient number, since it is larger than the sum of its proper divisors (49718971).

243042245 is a wasteful number, since it uses less digits than its factorization.

243042245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185091.

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

The square root of 243042245 is about 15589.8122182405. The cubic root of 243042245 is about 624.0613066067.

Adding to 243042245 its reverse (542240342), we get a palindrome (785282587).

The spelling of 243042245 in words is "two hundred forty-three million, forty-two thousand, two hundred forty-five".