42543641071 has 8 divisors (see below), whose sum is σ = 43200194400. Its totient is φ = 41891055360.

The previous prime is 42543641047. The next prime is 42543641081. The reversal of 42543641071 is 17014634524.

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

It is a cyclic number.

It is not a de Polignac number, because 42543641071 - 2¹⁷ = 42543509999 is a prime.

It is a super-2 number, since 2×42543641071² (a number of 22 digits) contains 22 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 42543641071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42543641011) 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 in 7 ways as a sum of consecutive naturals, for example, 970291 + ... + 1013188.

It is an arithmetic number, because the mean of its divisors is an integer number (5400024300).

Almost surely, 2^42543641071 is an apocalyptic number.

42543641071 is a deficient number, since it is larger than the sum of its proper divisors (656553329).

42543641071 is a wasteful number, since it uses less digits than its factorization.

42543641071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983809.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 42543641071 in words is "forty-two billion, five hundred forty-three million, six hundred forty-one thousand, seventy-one".