42139140873 has 8 divisors (see below), whose sum is σ = 56495939136. Its totient is φ = 27937551600.

The previous prime is 42139140839. The next prime is 42139140889. The reversal of 42139140873 is 37804193124.

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

It is not a de Polignac number, because 42139140873 - 2⁹ = 42139140361 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42139140803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38801613 + ... + 38802698.

It is an arithmetic number, because the mean of its divisors is an integer number (7061992392).

Almost surely, 2^42139140873 is an apocalyptic number.

It is an amenable number.

42139140873 is a deficient number, since it is larger than the sum of its proper divisors (14356798263).

42139140873 is a wasteful number, since it uses less digits than its factorization.

42139140873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77604495.

The product of its (nonzero) digits is 145152, while the sum is 42.

It can be divided in two parts, 421391 and 40873, that added together give a palindrome (462264).

The spelling of 42139140873 in words is "forty-two billion, one hundred thirty-nine million, one hundred forty thousand, eight hundred seventy-three".