42913543 has 4 divisors (see below), whose sum is σ = 42953760. Its totient is φ = 42873328.

The previous prime is 42913531. The next prime is 42913553. The reversal of 42913543 is 34531924.

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-42913543 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 (42913513) 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, 18463 + ... + 20656.

It is an arithmetic number, because the mean of its divisors is an integer number (10738440).

Almost surely, 2^42913543 is an apocalyptic number.

42913543 is a deficient number, since it is larger than the sum of its proper divisors (40217).

42913543 is a wasteful number, since it uses less digits than its factorization.

42913543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40216.

The product of its digits is 12960, while the sum is 31.

The square root of 42913543 is about 6550.8429228611. The cubic root of 42913543 is about 350.1048474999.

The spelling of 42913543 in words is "forty-two million, nine hundred thirteen thousand, five hundred forty-three".