242655745201 has 3 divisors (see below), whose sum is σ = 242656237803. Its totient is φ = 242655252600.

The previous prime is 242655745159. The next prime is 242655745253. The reversal of 242655745201 is 102547556242.

The square root of 242655745201 is 492601.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102547556242 = 2 ⋅51273778121.

It can be written as a sum of positive squares in only one way, i.e., 237557785201 + 5097960000 = 487399^2 + 71400^2 .

It is not a de Polignac number, because 242655745201 - 2¹¹ = 242655743153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242652745201) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 246301 + ... + 738901.

It is an arithmetic number, because the mean of its divisors is an integer number (80885412601).

Almost surely, 2^242655745201 is an apocalyptic number.

242655745201 is the 492601-st square number.

242655745201 is the 246301-st centered octagonal number.

It is an amenable number.

242655745201 is a deficient number, since it is larger than the sum of its proper divisors (492602).

242655745201 is an frugal number, since it uses more digits than its factorization.

242655745201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985202 (or 492601 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 43.

The spelling of 242655745201 in words is "two hundred forty-two billion, six hundred fifty-five million, seven hundred forty-five thousand, two hundred one".