242456565 has 16 divisors (see below), whose sum is σ = 417771648. Its totient is φ = 119363136.

The previous prime is 242456531. The next prime is 242456569. The reversal of 242456565 is 565654242.

It is not a de Polignac number, because 242456565 - 2¹⁶ = 242391029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242456569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 621489 + ... + 621878.

It is an arithmetic number, because the mean of its divisors is an integer number (26110728).

Almost surely, 2^242456565 is an apocalyptic number.

It is an amenable number.

242456565 is a deficient number, since it is larger than the sum of its proper divisors (175315083).

242456565 is a wasteful number, since it uses less digits than its factorization.

242456565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243388.

The product of its digits is 288000, while the sum is 39.

The square root of 242456565 is about 15571.0168261421. The cubic root of 242456565 is about 623.5596184985.

The spelling of 242456565 in words is "two hundred forty-two million, four hundred fifty-six thousand, five hundred sixty-five".