42103543 has 6 divisors (see below), whose sum is σ = 44726216. Its totient is φ = 39626592.

The previous prime is 42103541. The next prime is 42103613. The reversal of 42103543 is 34530124.

It is not a de Polignac number, because 42103543 - 2¹ = 42103541 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 (42103541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72555 + ... + 73132.

Almost surely, 2^42103543 is an apocalyptic number.

42103543 is a deficient number, since it is larger than the sum of its proper divisors (2622673).

42103543 is a wasteful number, since it uses less digits than its factorization.

42103543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145721 (or 145704 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 42103543 is about 6488.7242968090. The cubic root of 42103543 is about 347.8880794580. Note that the first 3 decimals are identical.

Adding to 42103543 its reverse (34530124), we get a palindrome (76633667).

The spelling of 42103543 in words is "forty-two million, one hundred three thousand, five hundred forty-three".