242729 has 2 divisors, whose sum is σ = 242730. Its totient is φ = 242728.

The previous prime is 242713. The next prime is 242731. The reversal of 242729 is 927242.

242729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200704 + 42025 = 448^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 242729 - 2⁴ = 242713 is a prime.

Together with 242731, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 242698 and 242707.

It is not a weakly prime, because it can be changed into another prime (242779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121364 + 121365.

It is an arithmetic number, because the mean of its divisors is an integer number (121365).

2²⁴²⁷²⁹ is an apocalyptic number.

It is an amenable number.

242729 is a deficient number, since it is larger than the sum of its proper divisors (1).

242729 is an equidigital number, since it uses as much as digits as its factorization.

242729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 242729 is about 492.6753494950. The cubic root of 242729 is about 62.3793084200.

It can be divided in two parts, 2 and 42729, that multiplied together give a palindrome (85458).

The spelling of 242729 in words is "two hundred forty-two thousand, seven hundred twenty-nine".