42440122100191 has 4 divisors (see below), whose sum is σ = 42440250632472. Its totient is φ = 42439993567912.

The previous prime is 42440122100179. The next prime is 42440122100209. The reversal of 42440122100191 is 19100122104424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42440122100191 - 2⁹ = 42440122099679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440122101191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63769576 + ... + 64431661.

It is an arithmetic number, because the mean of its divisors is an integer number (10610062658118).

Almost surely, 2^{42440122100191} is an apocalyptic number.

42440122100191 is a deficient number, since it is larger than the sum of its proper divisors (128532281).

42440122100191 is a wasteful number, since it uses less digits than its factorization.

42440122100191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128532280.

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 42440122100191 in words is "forty-two trillion, four hundred forty billion, one hundred twenty-two million, one hundred thousand, one hundred ninety-one".