242306563 has 4 divisors (see below), whose sum is σ = 255059560. Its totient is φ = 229553568.

The previous prime is 242306543. The next prime is 242306567. The reversal of 242306563 is 365603242.

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 242306563 - 2⁵ = 242306531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242306567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6376470 + ... + 6376507.

It is an arithmetic number, because the mean of its divisors is an integer number (63764890).

Almost surely, 2^242306563 is an apocalyptic number.

242306563 is a deficient number, since it is larger than the sum of its proper divisors (12752997).

242306563 is a wasteful number, since it uses less digits than its factorization.

242306563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12752996.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 242306563 is about 15566.1993755701. The cubic root of 242306563 is about 623.4309982295.

The spelling of 242306563 in words is "two hundred forty-two million, three hundred six thousand, five hundred sixty-three".