243315242 has 8 divisors (see below), whose sum is σ = 373460736. Its totient is φ = 118828332.

The previous prime is 243315227. The next prime is 243315251. The reversal of 243315242 is 242513342.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1414538 + ... + 1414709.

It is an arithmetic number, because the mean of its divisors is an integer number (46682592).

Almost surely, 2^243315242 is an apocalyptic number.

243315242 is a deficient number, since it is larger than the sum of its proper divisors (130145494).

243315242 is a wasteful number, since it uses less digits than its factorization.

243315242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829292.

The product of its digits is 5760, while the sum is 26.

The square root of 243315242 is about 15598.5653827524. The cubic root of 243315242 is about 624.2948779571.

Adding to 243315242 its reverse (242513342), we get a palindrome (485828584).

The spelling of 243315242 in words is "two hundred forty-three million, three hundred fifteen thousand, two hundred forty-two".