42442142543 has 4 divisors (see below), whose sum is σ = 42627479640. Its totient is φ = 42256805448.

The previous prime is 42442142537. The next prime is 42442142593. The reversal of 42442142543 is 34524124424.

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

It is a cyclic number.

It is not a de Polignac number, because 42442142543 - 2⁴ = 42442142527 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 (42442142593) 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 3 ways as a sum of consecutive naturals, for example, 92668205 + ... + 92668662.

It is an arithmetic number, because the mean of its divisors is an integer number (10656869910).

Almost surely, 2^42442142543 is an apocalyptic number.

42442142543 is a deficient number, since it is larger than the sum of its proper divisors (185337097).

42442142543 is a wasteful number, since it uses less digits than its factorization.

42442142543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185337096.

The product of its digits is 122880, while the sum is 35.

Adding to 42442142543 its reverse (34524124424), we get a palindrome (76966266967).

The spelling of 42442142543 in words is "forty-two billion, four hundred forty-two million, one hundred forty-two thousand, five hundred forty-three".