42505746071 has 4 divisors (see below), whose sum is σ = 42926595144. Its totient is φ = 42084897000.

The previous prime is 42505746067. The next prime is 42505746139. The reversal of 42505746071 is 17064750524.

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 42505746071 - 2² = 42505746067 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 (42505746001) 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 3 ways as a sum of consecutive naturals, for example, 210424385 + ... + 210424586.

It is an arithmetic number, because the mean of its divisors is an integer number (10731648786).

Almost surely, 2^42505746071 is an apocalyptic number.

42505746071 is a deficient number, since it is larger than the sum of its proper divisors (420849073).

42505746071 is a wasteful number, since it uses less digits than its factorization.

42505746071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420849072.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 42505746071 in words is "forty-two billion, five hundred five million, seven hundred forty-six thousand, seventy-one".