243792101 has 6 divisors (see below), whose sum is σ = 283594950. Its totient is φ = 208964616.

The previous prime is 243792079. The next prime is 243792113. The reversal of 243792101 is 101297342.

It can be written as a sum of positive squares in only one way, i.e., 138627076 + 105165025 = 11774^2 + 10255^2 .

It is a de Polignac number, because none of the positive numbers 2^k-243792101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243792151) 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 5 ways as a sum of consecutive naturals, for example, 2487626 + ... + 2487723.

It is an arithmetic number, because the mean of its divisors is an integer number (47265825).

Almost surely, 2^243792101 is an apocalyptic number.

It is an amenable number.

243792101 is a deficient number, since it is larger than the sum of its proper divisors (39802849).

243792101 is an equidigital number, since it uses as much as digits as its factorization.

243792101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975363 (or 4975356 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 243792101 is about 15613.8432488609. The cubic root of 243792101 is about 624.7024512194.

The spelling of 243792101 in words is "two hundred forty-three million, seven hundred ninety-two thousand, one hundred one".