42110010091 has 2 divisors, whose sum is σ = 42110010092. Its totient is φ = 42110010090.

The previous prime is 42110010049. The next prime is 42110010119. The reversal of 42110010091 is 19001001124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42110010091 - 2²¹ = 42107912939 is a prime.

It is not a weakly prime, because it can be changed into another prime (42110080091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055005045 + 21055005046.

It is an arithmetic number, because the mean of its divisors is an integer number (21055005046).

Almost surely, 2^42110010091 is an apocalyptic number.

42110010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

42110010091 is an equidigital number, since it uses as much as digits as its factorization.

42110010091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 42110010091 in words is "forty-two billion, one hundred ten million, ten thousand, ninety-one".