240421344413849 has 2 divisors, whose sum is σ = 240421344413850. Its totient is φ = 240421344413848.

The previous prime is 240421344413837. The next prime is 240421344414023. The reversal of 240421344413849 is 948314443124042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165065142581824 + 75356201832025 = 12847768^2 + 8680795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240421344413849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240421344413849.

It is not a weakly prime, because it can be changed into another prime (240421344413449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120210672206924 + 120210672206925.

It is an arithmetic number, because the mean of its divisors is an integer number (120210672206925).

Almost surely, 2^{240421344413849} is an apocalyptic number.

It is an amenable number.

240421344413849 is a deficient number, since it is larger than the sum of its proper divisors (1).

240421344413849 is an equidigital number, since it uses as much as digits as its factorization.

240421344413849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10616832, while the sum is 53.

The spelling of 240421344413849 in words is "two hundred forty trillion, four hundred twenty-one billion, three hundred forty-four million, four hundred thirteen thousand, eight hundred forty-nine".