42424008217 has 2 divisors, whose sum is σ = 42424008218. Its totient is φ = 42424008216.

The previous prime is 42424008149. The next prime is 42424008223. The reversal of 42424008217 is 71280042424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27946143241 + 14477864976 = 167171^2 + 120324^2 .

It is a cyclic number.

It is not a de Polignac number, because 42424008217 - 2¹¹ = 42424006169 is a prime.

It is not a weakly prime, because it can be changed into another prime (42424008257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21212004108 + 21212004109.

It is an arithmetic number, because the mean of its divisors is an integer number (21212004109).

Almost surely, 2^42424008217 is an apocalyptic number.

It is an amenable number.

42424008217 is a deficient number, since it is larger than the sum of its proper divisors (1).

42424008217 is an equidigital number, since it uses as much as digits as its factorization.

42424008217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28672, while the sum is 34.

The spelling of 42424008217 in words is "forty-two billion, four hundred twenty-four million, eight thousand, two hundred seventeen".