242447 has 2 divisors, whose sum is σ = 242448. Its totient is φ = 242446.

The previous prime is 242441. The next prime is 242449. The reversal of 242447 is 744242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242447 - 2¹⁴ = 226063 is a prime.

Together with 242449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242441) by changing a digit.

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 as a sum of consecutive naturals, namely, 121223 + 121224.

It is an arithmetic number, because the mean of its divisors is an integer number (121224).

2²⁴²⁴⁴⁷ is an apocalyptic number.

242447 is a deficient number, since it is larger than the sum of its proper divisors (1).

242447 is an equidigital number, since it uses as much as digits as its factorization.

242447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 23.

The square root of 242447 is about 492.3890738024. The cubic root of 242447 is about 62.3551418506.

Adding to 242447 its reverse (744242), we get a palindrome (986689).

The spelling of 242447 in words is "two hundred forty-two thousand, four hundred forty-seven", and thus it is an iban number.