42444200191 has 2 divisors, whose sum is σ = 42444200192. Its totient is φ = 42444200190.

The previous prime is 42444200177. The next prime is 42444200213. The reversal of 42444200191 is 19100244424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42444200191 - 2⁵ = 42444200159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42444200131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222100095 + 21222100096.

It is an arithmetic number, because the mean of its divisors is an integer number (21222100096).

Almost surely, 2^42444200191 is an apocalyptic number.

42444200191 is a deficient number, since it is larger than the sum of its proper divisors (1).

42444200191 is an equidigital number, since it uses as much as digits as its factorization.

42444200191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

The spelling of 42444200191 in words is "forty-two billion, four hundred forty-four million, two hundred thousand, one hundred ninety-one".