242775109 has 4 divisors (see below), whose sum is σ = 242806540. Its totient is φ = 242743680.

The previous prime is 242775089. The next prime is 242775121. The reversal of 242775109 is 901577242.

242775109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 901577242 = 2 ⋅450788621.

It can be written as a sum of positive squares in 2 ways, for example, as 135652609 + 107122500 = 11647^2 + 10350^2 .

It is a cyclic number.

It is not a de Polignac number, because 242775109 - 2⁵ = 242775077 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 (242775149) 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, 4789 + ... + 22549.

It is an arithmetic number, because the mean of its divisors is an integer number (60701635).

Almost surely, 2^242775109 is an apocalyptic number.

It is an amenable number.

242775109 is a deficient number, since it is larger than the sum of its proper divisors (31431).

242775109 is a wasteful number, since it uses less digits than its factorization.

242775109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31430.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 242775109 is about 15581.2422162034. The cubic root of 242775109 is about 623.8325804482.

The spelling of 242775109 in words is "two hundred forty-two million, seven hundred seventy-five thousand, one hundred nine".