3240240121 has 2 divisors, whose sum is σ = 3240240122. Its totient is φ = 3240240120.

The previous prime is 3240240119. The next prime is 3240240163. The reversal of 3240240121 is 1210420423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2016010000 + 1224230121 = 44900^2 + 34989^2 .

It is a cyclic number.

It is not a de Polignac number, because 3240240121 - 2¹ = 3240240119 is a prime.

Together with 3240240119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3240240821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620120060 + 1620120061.

It is an arithmetic number, because the mean of its divisors is an integer number (1620120061).

Almost surely, 2^3240240121 is an apocalyptic number.

It is an amenable number.

3240240121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240240121 is an equidigital number, since it uses as much as digits as its factorization.

3240240121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 3240240121 is about 56923.1070919359. The cubic root of 3240240121 is about 1479.7637985909.

Adding to 3240240121 its reverse (1210420423), we get a palindrome (4450660544).

The spelling of 3240240121 in words is "three billion, two hundred forty million, two hundred forty thousand, one hundred twenty-one".