242540008 has 8 divisors (see below), whose sum is σ = 454762530. Its totient is φ = 121270000.

The previous prime is 242539987. The next prime is 242540009. The reversal of 242540008 is 800045242.

It is a happy number.

242540008 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 229159044 + 13380964 = 15138^2 + 3658^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (242540009) 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 as a sum of consecutive naturals, namely, 15158743 + ... + 15158758.

Almost surely, 2^242540008 is an apocalyptic number.

It is an amenable number.

242540008 is a deficient number, since it is larger than the sum of its proper divisors (212222522).

242540008 is a wasteful number, since it uses less digits than its factorization.

242540008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30317507 (or 30317503 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 242540008 is about 15573.6960288815. The cubic root of 242540008 is about 623.6311443233.

The spelling of 242540008 in words is "two hundred forty-two million, five hundred forty thousand, eight".