42381711191 has 2 divisors, whose sum is σ = 42381711192. Its totient is φ = 42381711190.

The previous prime is 42381711181. The next prime is 42381711209. The reversal of 42381711191 is 19111718324.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42381711191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42381711121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21190855595 + 21190855596.

It is an arithmetic number, because the mean of its divisors is an integer number (21190855596).

Almost surely, 2^42381711191 is an apocalyptic number.

42381711191 is a deficient number, since it is larger than the sum of its proper divisors (1).

42381711191 is an equidigital number, since it uses as much as digits as its factorization.

42381711191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 38.

The spelling of 42381711191 in words is "forty-two billion, three hundred eighty-one million, seven hundred eleven thousand, one hundred ninety-one".