242120243 has 8 divisors (see below), whose sum is σ = 244328448. Its totient is φ = 239922504.

The previous prime is 242120209. The next prime is 242120269. The reversal of 242120243 is 342021242.

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 242120243 - 2⁸ = 242119987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242123243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48230 + ... + 53012.

It is an arithmetic number, because the mean of its divisors is an integer number (30541056).

Almost surely, 2^242120243 is an apocalyptic number.

242120243 is a deficient number, since it is larger than the sum of its proper divisors (2208205).

242120243 is a wasteful number, since it uses less digits than its factorization.

242120243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5233.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 242120243 is about 15560.2134625461. The cubic root of 242120243 is about 623.2711628984.

Adding to 242120243 its reverse (342021242), we get a palindrome (584141485).

Subtracting 242120243 from its reverse (342021242), we obtain a palindrome (99900999).

The spelling of 242120243 in words is "two hundred forty-two million, one hundred twenty thousand, two hundred forty-three".