240442121 has 2 divisors, whose sum is σ = 240442122. Its totient is φ = 240442120.

The previous prime is 240442087. The next prime is 240442129. The reversal of 240442121 is 121244042.

240442121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197683600 + 42758521 = 14060^2 + 6539^2 .

It is a cyclic number.

It is not a de Polignac number, because 240442121 - 2⁶ = 240442057 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 240442093 and 240442102.

It is not a weakly prime, because it can be changed into another prime (240442129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120221060 + 120221061.

It is an arithmetic number, because the mean of its divisors is an integer number (120221061).

Almost surely, 2^240442121 is an apocalyptic number.

It is an amenable number.

240442121 is a deficient number, since it is larger than the sum of its proper divisors (1).

240442121 is an equidigital number, since it uses as much as digits as its factorization.

240442121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 240442121 is about 15506.1962131272. The cubic root of 240442121 is about 621.8278706436.

Adding to 240442121 its reverse (121244042), we get a palindrome (361686163).

The spelling of 240442121 in words is "two hundred forty million, four hundred forty-two thousand, one hundred twenty-one".