42113543 has 4 divisors (see below), whose sum is σ = 42129168. Its totient is φ = 42097920.

The previous prime is 42113527. The next prime is 42113549. The reversal of 42113543 is 34531124.

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 42113543 - 2⁴ = 42113527 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 (42113549) 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, 2618 + ... + 9543.

It is an arithmetic number, because the mean of its divisors is an integer number (10532292).

Almost surely, 2^42113543 is an apocalyptic number.

42113543 is a deficient number, since it is larger than the sum of its proper divisors (15625).

42113543 is a wasteful number, since it uses less digits than its factorization.

42113543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15624.

The product of its digits is 1440, while the sum is 23.

The square root of 42113543 is about 6489.4948185510. The cubic root of 42113543 is about 347.9156195426.

Adding to 42113543 its reverse (34531124), we get a palindrome (76644667).

The spelling of 42113543 in words is "forty-two million, one hundred thirteen thousand, five hundred forty-three".