242563561 has 8 divisors (see below), whose sum is σ = 250707200. Its totient is φ = 234439920.

The previous prime is 242563553. The next prime is 242563579. The reversal of 242563561 is 165365242.

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

It is a cyclic number.

It is not a de Polignac number, because 242563561 - 2³ = 242563553 is a prime.

It is a super-2 number, since 2×242563561² = 117674162250001442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242563961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22075 + ... + 31183.

It is an arithmetic number, because the mean of its divisors is an integer number (31338400).

Almost surely, 2^242563561 is an apocalyptic number.

It is an amenable number.

242563561 is a deficient number, since it is larger than the sum of its proper divisors (8143639).

242563561 is an equidigital number, since it uses as much as digits as its factorization.

242563561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9999.

The product of its digits is 43200, while the sum is 34.

The square root of 242563561 is about 15574.4521894030. The cubic root of 242563561 is about 623.6513305585.

The spelling of 242563561 in words is "two hundred forty-two million, five hundred sixty-three thousand, five hundred sixty-one".