240444121 has 2 divisors, whose sum is σ = 240444122. Its totient is φ = 240444120.

The previous prime is 240444119. The next prime is 240444137. The reversal of 240444121 is 121444042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234855625 + 5588496 = 15325^2 + 2364^2 .

It is a cyclic number.

It is not a de Polignac number, because 240444121 - 2¹ = 240444119 is a prime.

Together with 240444119, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 240444092 and 240444101.

It is not a weakly prime, because it can be changed into another prime (240442121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120222060 + 120222061.

It is an arithmetic number, because the mean of its divisors is an integer number (120222061).

Almost surely, 2^240444121 is an apocalyptic number.

It is an amenable number.

240444121 is a deficient number, since it is larger than the sum of its proper divisors (1).

240444121 is an equidigital number, since it uses as much as digits as its factorization.

240444121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 240444121 is about 15506.2607033417. The cubic root of 240444121 is about 621.8295947624.

Adding to 240444121 its reverse (121444042), we get a palindrome (361888163).

The spelling of 240444121 in words is "two hundred forty million, four hundred forty-four thousand, one hundred twenty-one".