242440665 has 64 divisors (see below), whose sum is σ = 425103360. Its totient is φ = 117573120.

The previous prime is 242440637. The next prime is 242440691. The reversal of 242440665 is 566044242.

It is not a de Polignac number, because 242440665 - 2⁵ = 242440633 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 894480 + ... + 894750.

It is an arithmetic number, because the mean of its divisors is an integer number (6642240).

Almost surely, 2^242440665 is an apocalyptic number.

It is an amenable number.

242440665 is a deficient number, since it is larger than the sum of its proper divisors (182662695).

242440665 is a wasteful number, since it uses less digits than its factorization.

242440665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 242440665 is about 15570.5062538120. The cubic root of 242440665 is about 623.5459874458.

The spelling of 242440665 in words is "two hundred forty-two million, four hundred forty thousand, six hundred sixty-five".