242574561 has 8 divisors (see below), whose sum is σ = 359369760. Its totient is φ = 161716356.

The previous prime is 242574557. The next prime is 242574569. The reversal of 242574561 is 165475242.

It is a happy number.

242574561 is a `hidden beast` number, since 2 + 4 + 25 + 74 + 561 = 666.

It is not a de Polignac number, because 242574561 - 2² = 242574557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242574569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4492095 + ... + 4492148.

It is an arithmetic number, because the mean of its divisors is an integer number (44921220).

Almost surely, 2^242574561 is an apocalyptic number.

It is an amenable number.

242574561 is a deficient number, since it is larger than the sum of its proper divisors (116795199).

242574561 is an equidigital number, since it uses as much as digits as its factorization.

242574561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8984252 (or 8984246 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 242574561 is about 15574.8053278364. The cubic root of 242574561 is about 623.6607577246.

The spelling of 242574561 in words is "two hundred forty-two million, five hundred seventy-four thousand, five hundred sixty-one".