42434565191 has 2 divisors, whose sum is σ = 42434565192. Its totient is φ = 42434565190.

The previous prime is 42434565119. The next prime is 42434565203. The reversal of 42434565191 is 19156543424.

It is a happy number.

Together with previous prime (42434565119) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42434565191 - 2¹⁰ = 42434564167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42434525191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21217282595 + 21217282596.

It is an arithmetic number, because the mean of its divisors is an integer number (21217282596).

Almost surely, 2^42434565191 is an apocalyptic number.

42434565191 is a deficient number, since it is larger than the sum of its proper divisors (1).

42434565191 is an equidigital number, since it uses as much as digits as its factorization.

42434565191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 44.

The spelling of 42434565191 in words is "forty-two billion, four hundred thirty-four million, five hundred sixty-five thousand, one hundred ninety-one".