242204161 has 4 divisors (see below), whose sum is σ = 244602324. Its totient is φ = 239806000.

The previous prime is 242204159. The next prime is 242204173. The reversal of 242204161 is 161402242.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 201640000 + 40564161 = 14200^2 + 6369^2 .

It is a cyclic number.

It is not a de Polignac number, because 242204161 - 2¹ = 242204159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242204111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1198930 + ... + 1199131.

It is an arithmetic number, because the mean of its divisors is an integer number (61150581).

Almost surely, 2^242204161 is an apocalyptic number.

It is an amenable number.

242204161 is a deficient number, since it is larger than the sum of its proper divisors (2398163).

242204161 is a wasteful number, since it uses less digits than its factorization.

242204161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398162.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 242204161 is about 15562.9097857695. The cubic root of 242204161 is about 623.3431624239.

The spelling of 242204161 in words is "two hundred forty-two million, two hundred four thousand, one hundred sixty-one".