42343120091 has 2 divisors, whose sum is σ = 42343120092. Its totient is φ = 42343120090.

The previous prime is 42343119953. The next prime is 42343120097. The reversal of 42343120091 is 19002134324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42343120091 - 2¹⁰ = 42343119067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42343120097) 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, 21171560045 + 21171560046.

It is an arithmetic number, because the mean of its divisors is an integer number (21171560046).

Almost surely, 2^42343120091 is an apocalyptic number.

42343120091 is a deficient number, since it is larger than the sum of its proper divisors (1).

42343120091 is an equidigital number, since it uses as much as digits as its factorization.

42343120091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 42343120091 in words is "forty-two billion, three hundred forty-three million, one hundred twenty thousand, ninety-one".