242256665 has 32 divisors (see below), whose sum is σ = 340381440. Its totient is φ = 162100224.

The previous prime is 242256653. The next prime is 242256673. The reversal of 242256665 is 566652242.

It is a cyclic number.

It is not a de Polignac number, because 242256665 - 2⁶ = 242256601 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 258077 + ... + 259013.

It is an arithmetic number, because the mean of its divisors is an integer number (10636920).

Almost surely, 2^242256665 is an apocalyptic number.

It is an amenable number.

242256665 is a deficient number, since it is larger than the sum of its proper divisors (98124775).

242256665 is an equidigital number, since it uses as much as digits as its factorization.

242256665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121.

The product of its digits is 172800, while the sum is 38.

The square root of 242256665 is about 15564.5965254484. The cubic root of 242256665 is about 623.3882010732.

The spelling of 242256665 in words is "two hundred forty-two million, two hundred fifty-six thousand, six hundred sixty-five".