743543 has 4 divisors (see below), whose sum is σ = 750600. Its totient is φ = 736488.

The previous prime is 743507. The next prime is 743549. The reversal of 743543 is 345347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345347 = 367 ⋅941.

It is a cyclic number.

It is not a de Polignac number, because 743543 - 2¹⁰ = 742519 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 (743549) 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, 3368 + ... + 3581.

It is an arithmetic number, because the mean of its divisors is an integer number (187650).

2⁷⁴³⁵⁴³ is an apocalyptic number.

743543 is a deficient number, since it is larger than the sum of its proper divisors (7057).

743543 is a wasteful number, since it uses less digits than its factorization.

743543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7056.

The product of its digits is 5040, while the sum is 26.

The square root of 743543 is about 862.2893945770. The cubic root of 743543 is about 90.5945411711.

The spelling of 743543 in words is "seven hundred forty-three thousand, five hundred forty-three".