642112264247 has 2 divisors, whose sum is σ = 642112264248. Its totient is φ = 642112264246.

The previous prime is 642112264231. The next prime is 642112264331. The reversal of 642112264247 is 742462211246.

642112264247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642112264247 - 2⁴ = 642112264231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642112264847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321056132123 + 321056132124.

It is an arithmetic number, because the mean of its divisors is an integer number (321056132124).

Almost surely, 2^642112264247 is an apocalyptic number.

642112264247 is a deficient number, since it is larger than the sum of its proper divisors (1).

642112264247 is an equidigital number, since it uses as much as digits as its factorization.

642112264247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 41.

The spelling of 642112264247 in words is "six hundred forty-two billion, one hundred twelve million, two hundred sixty-four thousand, two hundred forty-seven".