243242345 has 8 divisors (see below), whose sum is σ = 291979080. Its totient is φ = 194535040.

The previous prime is 243242327. The next prime is 243242359. The reversal of 243242345 is 543242342.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 74787904 + 168454441 = 8648^2 + 12979^2 .

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

It is not a de Polignac number, because 243242345 - 2²⁰ = 242193769 is a prime.

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, 20261 + ... + 29949.

It is an arithmetic number, because the mean of its divisors is an integer number (36497385).

Almost surely, 2^243242345 is an apocalyptic number.

It is an amenable number.

243242345 is a deficient number, since it is larger than the sum of its proper divisors (48736735).

243242345 is an equidigital number, since it uses as much as digits as its factorization.

243242345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14715.

The product of its digits is 23040, while the sum is 29.

The square root of 243242345 is about 15596.2285505182. The cubic root of 243242345 is about 624.2325256922.

Adding to 243242345 its reverse (543242342), we get a palindrome (786484687).

The spelling of 243242345 in words is "two hundred forty-three million, two hundred forty-two thousand, three hundred forty-five".