42943834923 has 16 divisors (see below), whose sum is σ = 62539330176. Its totient is φ = 25995079040.

The previous prime is 42943834877. The next prime is 42943834939. The reversal of 42943834923 is 32943834924.

It is a cyclic number.

It is not a de Polignac number, because 42943834923 - 2²⁰ = 42942786347 is a prime.

It is a Smith number, since the sum of its digits (51) 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 (42943833923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 759486 + ... + 814067.

It is an arithmetic number, because the mean of its divisors is an integer number (3908708136).

Almost surely, 2^42943834923 is an apocalyptic number.

42943834923 is a deficient number, since it is larger than the sum of its proper divisors (19595495253).

42943834923 is a wasteful number, since it uses less digits than its factorization.

42943834923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574394.

The product of its digits is 4478976, while the sum is 51.

Subtracting from 42943834923 its reverse (32943834924), we obtain a palindrome (9999999999).

The spelling of 42943834923 in words is "forty-two billion, nine hundred forty-three million, eight hundred thirty-four thousand, nine hundred twenty-three".