242147 has 2 divisors, whose sum is σ = 242148. Its totient is φ = 242146.

The previous prime is 242129. The next prime is 242161. The reversal of 242147 is 741242.

242147 is nontrivially palindromic in base 6.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242147 - 2⁶ = 242083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242197) 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, 121073 + 121074.

It is an arithmetic number, because the mean of its divisors is an integer number (121074).

2²⁴²¹⁴⁷ is an apocalyptic number.

242147 is a deficient number, since it is larger than the sum of its proper divisors (1).

242147 is an equidigital number, since it uses as much as digits as its factorization.

242147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 20.

The square root of 242147 is about 492.0843423642. The cubic root of 242147 is about 62.3294121535.

Adding to 242147 its reverse (741242), we get a palindrome (983389).

The spelling of 242147 in words is "two hundred forty-two thousand, one hundred forty-seven", and thus it is an iban number.