642112264219 has 2 divisors, whose sum is σ = 642112264220. Its totient is φ = 642112264218.

The previous prime is 642112264139. The next prime is 642112264231. The reversal of 642112264219 is 912462211246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642112264219 is a prime.

It is a super-2 number, since 2×642112264219² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (642112262219) 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, 321056132109 + 321056132110.

It is an arithmetic number, because the mean of its divisors is an integer number (321056132110).

Almost surely, 2^642112264219 is an apocalyptic number.

642112264219 is a deficient number, since it is larger than the sum of its proper divisors (1).

642112264219 is an equidigital number, since it uses as much as digits as its factorization.

642112264219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The spelling of 642112264219 in words is "six hundred forty-two billion, one hundred twelve million, two hundred sixty-four thousand, two hundred nineteen".