242563 has 4 divisors (see below), whose sum is σ = 248248. Its totient is φ = 236880.
The previous prime is 242551. The next prime is 242591. The reversal of 242563 is 365242.
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 242563 - 217 = 111491 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (242533) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2778 + ... + 2863.
It is an arithmetic number, because the mean of its divisors is an integer number (62062).
2242563 is an apocalyptic number.
242563 is a deficient number, since it is larger than the sum of its proper divisors (5685).
242563 is an equidigital number, since it uses as much as digits as its factorization.
242563 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5684.
The product of its digits is 1440, while the sum is 22.
The square root of 242563 is about 492.5068527442. The cubic root of 242563 is about 62.3650849765.
The spelling of 242563 in words is "two hundred forty-two thousand, five hundred sixty-three".
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