242340223 has 4 divisors (see below), whose sum is σ = 242388720. Its totient is φ = 242291728.

The previous prime is 242340209. The next prime is 242340229. The reversal of 242340223 is 322043242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322043242 = 2 ⋅161021621.

It is a cyclic number.

It is not a de Polignac number, because 242340223 - 2⁵ = 242340191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242340194 and 242340203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242340229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15763 + ... + 27076.

It is an arithmetic number, because the mean of its divisors is an integer number (60597180).

Almost surely, 2^242340223 is an apocalyptic number.

242340223 is a deficient number, since it is larger than the sum of its proper divisors (48497).

242340223 is an equidigital number, since it uses as much as digits as its factorization.

242340223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48496.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 242340223 is about 15567.2805267972. The cubic root of 242340223 is about 623.4598648514.

Adding to 242340223 its reverse (322043242), we get a palindrome (564383465).

The spelling of 242340223 in words is "two hundred forty-two million, three hundred forty thousand, two hundred twenty-three".