242540443 has 2 divisors, whose sum is σ = 242540444. Its totient is φ = 242540442.

The previous prime is 242540429. The next prime is 242540477. The reversal of 242540443 is 344045242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242540443 - 2⁹ = 242539931 is a prime.

It is not a weakly prime, because it can be changed into another prime (242540413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121270221 + 121270222.

It is an arithmetic number, because the mean of its divisors is an integer number (121270222).

Almost surely, 2^242540443 is an apocalyptic number.

242540443 is a deficient number, since it is larger than the sum of its proper divisors (1).

242540443 is an equidigital number, since it uses as much as digits as its factorization.

242540443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 242540443 is about 15573.7099947315. The cubic root of 242540443 is about 623.6315171545.

Adding to 242540443 its reverse (344045242), we get a palindrome (586585685).

The spelling of 242540443 in words is "two hundred forty-two million, five hundred forty thousand, four hundred forty-three".