242278205161 has 8 divisors (see below), whose sum is σ = 252842122944. Its totient is φ = 231716794320.

The previous prime is 242278205153. The next prime is 242278205167. The reversal of 242278205161 is 161502872242.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242278205161 - 2³ = 242278205153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242278205167) 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 7 ways as a sum of consecutive naturals, for example, 427891 + ... + 817096.

It is an arithmetic number, because the mean of its divisors is an integer number (31605265368).

Almost surely, 2^242278205161 is an apocalyptic number.

It is an amenable number.

242278205161 is a deficient number, since it is larger than the sum of its proper divisors (10563917783).

242278205161 is a wasteful number, since it uses less digits than its factorization.

242278205161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253471.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 242278205161 in words is "two hundred forty-two billion, two hundred seventy-eight million, two hundred five thousand, one hundred sixty-one".