242566919099 has 4 divisors (see below), whose sum is σ = 243573421080. Its totient is φ = 241560417120.

The previous prime is 242566919093. The next prime is 242566919129. The reversal of 242566919099 is 990919665242.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242566919099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242566919093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503250629 + ... + 503251110.

It is an arithmetic number, because the mean of its divisors is an integer number (60893355270).

Almost surely, 2^242566919099 is an apocalyptic number.

242566919099 is a deficient number, since it is larger than the sum of its proper divisors (1006501981).

242566919099 is a wasteful number, since it uses less digits than its factorization.

242566919099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006501980.

The product of its (nonzero) digits is 18895680, while the sum is 62.

The spelling of 242566919099 in words is "two hundred forty-two billion, five hundred sixty-six million, nine hundred nineteen thousand, ninety-nine".