242666403 has 16 divisors (see below), whose sum is σ = 382529280. Its totient is φ = 133884576.

The previous prime is 242666401. The next prime is 242666407. The reversal of 242666403 is 304666242.

It is not a de Polignac number, because 242666403 - 2¹ = 242666401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242666401) 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 in 15 ways as a sum of consecutive naturals, for example, 198625 + ... + 199842.

It is an arithmetic number, because the mean of its divisors is an integer number (23908080).

Almost surely, 2^242666403 is an apocalyptic number.

242666403 is a deficient number, since it is larger than the sum of its proper divisors (139862877).

242666403 is a wasteful number, since it uses less digits than its factorization.

242666403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398506.

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 242666403 is about 15577.7534644762. The cubic root of 242666403 is about 623.7394565843.

The spelling of 242666403 in words is "two hundred forty-two million, six hundred sixty-six thousand, four hundred three".