240420122489 has 2 divisors, whose sum is σ = 240420122490. Its totient is φ = 240420122488.

The previous prime is 240420122417. The next prime is 240420122497. The reversal of 240420122489 is 984221024042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181234964089 + 59185158400 = 425717^2 + 243280^2 .

It is a cyclic number.

It is not a de Polignac number, because 240420122489 - 2⁸ = 240420122233 is a prime.

It is not a weakly prime, because it can be changed into another prime (240420122689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120210061244 + 120210061245.

It is an arithmetic number, because the mean of its divisors is an integer number (120210061245).

Almost surely, 2^240420122489 is an apocalyptic number.

It is an amenable number.

240420122489 is a deficient number, since it is larger than the sum of its proper divisors (1).

240420122489 is an equidigital number, since it uses as much as digits as its factorization.

240420122489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 38.

The spelling of 240420122489 in words is "two hundred forty billion, four hundred twenty million, one hundred twenty-two thousand, four hundred eighty-nine".