42202620217 has 2 divisors, whose sum is σ = 42202620218. Its totient is φ = 42202620216.

The previous prime is 42202620197. The next prime is 42202620227. The reversal of 42202620217 is 71202620224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38390916096 + 3811704121 = 195936^2 + 61739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42202620217 is a prime.

It is a super-2 number, since 2×42202620217² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42202620227) 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, 21101310108 + 21101310109.

It is an arithmetic number, because the mean of its divisors is an integer number (21101310109).

Almost surely, 2^42202620217 is an apocalyptic number.

It is an amenable number.

42202620217 is a deficient number, since it is larger than the sum of its proper divisors (1).

42202620217 is an equidigital number, since it uses as much as digits as its factorization.

42202620217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 42202620217 in words is "forty-two billion, two hundred two million, six hundred twenty thousand, two hundred seventeen".