42384211217 has 2 divisors, whose sum is σ = 42384211218. Its totient is φ = 42384211216.

The previous prime is 42384211187. The next prime is 42384211241. The reversal of 42384211217 is 71211248324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22774129921 + 19610081296 = 150911^2 + 140036^2 .

It is a cyclic number.

It is not a de Polignac number, because 42384211217 - 2¹⁶ = 42384145681 is a prime.

It is not a weakly prime, because it can be changed into another prime (42384211267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21192105608 + 21192105609.

It is an arithmetic number, because the mean of its divisors is an integer number (21192105609).

Almost surely, 2^42384211217 is an apocalyptic number.

It is an amenable number.

42384211217 is a deficient number, since it is larger than the sum of its proper divisors (1).

42384211217 is an equidigital number, since it uses as much as digits as its factorization.

42384211217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 35.

The spelling of 42384211217 in words is "forty-two billion, three hundred eighty-four million, two hundred eleven thousand, two hundred seventeen".