242642443 has 4 divisors (see below), whose sum is σ = 246264040. Its totient is φ = 239020848.

The previous prime is 242642441. The next prime is 242642447. The reversal of 242642443 is 344246242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344246242 = 2 ⋅172123121.

It is a cyclic number.

It is not a de Polignac number, because 242642443 - 2¹ = 242642441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242642441) 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, 1810698 + ... + 1810831.

It is an arithmetic number, because the mean of its divisors is an integer number (61566010).

Almost surely, 2^242642443 is an apocalyptic number.

242642443 is a deficient number, since it is larger than the sum of its proper divisors (3621597).

242642443 is an equidigital number, since it uses as much as digits as its factorization.

242642443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621596.

The product of its digits is 36864, while the sum is 31.

The square root of 242642443 is about 15576.9844000692. The cubic root of 242642443 is about 623.7189273185.

Adding to 242642443 its reverse (344246242), we get a palindrome (586888685).

The spelling of 242642443 in words is "two hundred forty-two million, six hundred forty-two thousand, four hundred forty-three".