42091069791 has 8 divisors (see below), whose sum is σ = 56171405440. Its totient is φ = 28035723672.

The previous prime is 42091069751. The next prime is 42091069793. The reversal of 42091069791 is 19796019024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42091069791 - 2¹³ = 42091061599 is a prime.

It is a super-3 number, since 3×42091069791³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42091069791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42091069793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6243451 + ... + 6250188.

It is an arithmetic number, because the mean of its divisors is an integer number (7021425680).

Almost surely, 2^42091069791 is an apocalyptic number.

42091069791 is a deficient number, since it is larger than the sum of its proper divisors (14080335649).

42091069791 is a wasteful number, since it uses less digits than its factorization.

42091069791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12494765.

The product of its (nonzero) digits is 244944, while the sum is 48.

The spelling of 42091069791 in words is "forty-two billion, ninety-one million, sixty-nine thousand, seven hundred ninety-one".