2240140121 has 2 divisors, whose sum is σ = 2240140122. Its totient is φ = 2240140120.

The previous prime is 2240140117. The next prime is 2240140129. The reversal of 2240140121 is 1210410422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1445520400 + 794619721 = 38020^2 + 28189^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240140121 - 2² = 2240140117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2240140121.

It is not a weakly prime, because it can be changed into another prime (2240140129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120070060 + 1120070061.

It is an arithmetic number, because the mean of its divisors is an integer number (1120070061).

Almost surely, 2^2240140121 is an apocalyptic number.

It is an amenable number.

2240140121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2240140121 is an equidigital number, since it uses as much as digits as its factorization.

2240140121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2240140121 is about 47330.1185398896. The cubic root of 2240140121 is about 1308.4538059520.

Adding to 2240140121 its reverse (1210410422), we get a palindrome (3450550543).

The spelling of 2240140121 in words is "two billion, two hundred forty million, one hundred forty thousand, one hundred twenty-one".