242240109 has 4 divisors (see below), whose sum is σ = 322986816. Its totient is φ = 161493404.

The previous prime is 242240087. The next prime is 242240171. The reversal of 242240109 is 901042242.

242240109 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 Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242240109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242240809) 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, 40373349 + ... + 40373354.

It is an arithmetic number, because the mean of its divisors is an integer number (80746704).

Almost surely, 2^242240109 is an apocalyptic number.

It is an amenable number.

242240109 is a deficient number, since it is larger than the sum of its proper divisors (80746707).

242240109 is an equidigital number, since it uses as much as digits as its factorization.

242240109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80746706.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 242240109 is about 15564.0646683313. The cubic root of 242240109 is about 623.3739998125.

The spelling of 242240109 in words is "two hundred forty-two million, two hundred forty thousand, one hundred nine".