240420122417 has 2 divisors, whose sum is σ = 240420122418. Its totient is φ = 240420122416.

The previous prime is 240420122413. The next prime is 240420122489. The reversal of 240420122417 is 714221024042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135883653376 + 104536469041 = 368624^2 + 323321^2 .

It is a cyclic number.

It is not a de Polignac number, because 240420122417 - 2² = 240420122413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240420122417.

It is not a weakly prime, because it can be changed into another prime (240420122413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120210061208 + 120210061209.

It is an arithmetic number, because the mean of its divisors is an integer number (120210061209).

Almost surely, 2^240420122417 is an apocalyptic number.

It is an amenable number.

240420122417 is a deficient number, since it is larger than the sum of its proper divisors (1).

240420122417 is an equidigital number, since it uses as much as digits as its factorization.

240420122417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 29.

Adding to 240420122417 its reverse (714221024042), we get a palindrome (954641146459).

The spelling of 240420122417 in words is "two hundred forty billion, four hundred twenty million, one hundred twenty-two thousand, four hundred seventeen".