42312720671 has 8 divisors (see below), whose sum is σ = 45594484320. Its totient is φ = 39034805472.

The previous prime is 42312720647. The next prime is 42312720721. The reversal of 42312720671 is 17602721324.

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

It is a de Polignac number, because none of the positive numbers 2^k-42312720671 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 (42312720371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939251 + ... + 983268.

It is an arithmetic number, because the mean of its divisors is an integer number (5699310540).

Almost surely, 2^42312720671 is an apocalyptic number.

42312720671 is a deficient number, since it is larger than the sum of its proper divisors (3281763649).

42312720671 is a wasteful number, since it uses less digits than its factorization.

42312720671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924225.

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 42312720671 in words is "forty-two billion, three hundred twelve million, seven hundred twenty thousand, six hundred seventy-one".