42143232305543 has 4 divisors (see below), whose sum is σ = 42143268569568. Its totient is φ = 42143196041520.

The previous prime is 42143232305453. The next prime is 42143232305579. The reversal of 42143232305543 is 34550323234124.

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 42143232305543 - 2¹⁰ = 42143232304519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42143232305543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42143232305593) 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, 16329071 + ... + 18732992.

It is an arithmetic number, because the mean of its divisors is an integer number (10535817142392).

Almost surely, 2^{42143232305543} is an apocalyptic number.

42143232305543 is a deficient number, since it is larger than the sum of its proper divisors (36264025).

42143232305543 is a wasteful number, since it uses less digits than its factorization.

42143232305543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36264024.

The product of its (nonzero) digits is 1036800, while the sum is 41.

Adding to 42143232305543 its reverse (34550323234124), we get a palindrome (76693555539667).

The spelling of 42143232305543 in words is "forty-two trillion, one hundred forty-three billion, two hundred thirty-two million, three hundred five thousand, five hundred forty-three".