242786 has 8 divisors (see below), whose sum is σ = 366444. Its totient is φ = 120640.

The previous prime is 242779. The next prime is 242789. The reversal of 242786 is 687242.

242786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 225625 + 17161 = 475^2 + 131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (242789) by changing a digit.

242786 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206 + ... + 726.

2²⁴²⁷⁸⁶ is an apocalyptic number.

242786 is a deficient number, since it is larger than the sum of its proper divisors (123658).

242786 is a wasteful number, since it uses less digits than its factorization.

242786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its digits is 5376, while the sum is 29.

The square root of 242786 is about 492.7331935236. The cubic root of 242786 is about 62.3841908778.

The spelling of 242786 in words is "two hundred forty-two thousand, seven hundred eighty-six".