42043055443 has 4 divisors (see below), whose sum is σ = 42055178560. Its totient is φ = 42030932328.

The previous prime is 42043055423. The next prime is 42043055449. The reversal of 42043055443 is 34455034024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42043055443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42043055399 and 42043055408.

It is not an unprimeable number, because it can be changed into a prime (42043055449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6056355 + ... + 6063292.

It is an arithmetic number, because the mean of its divisors is an integer number (10513794640).

Almost surely, 2^42043055443 is an apocalyptic number.

42043055443 is a deficient number, since it is larger than the sum of its proper divisors (12123117).

42043055443 is a wasteful number, since it uses less digits than its factorization.

42043055443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12123116.

The product of its (nonzero) digits is 115200, while the sum is 34.

Adding to 42043055443 its reverse (34455034024), we get a palindrome (76498089467).

The spelling of 42043055443 in words is "forty-two billion, forty-three million, fifty-five thousand, four hundred forty-three".