423743 has 4 divisors (see below), whose sum is σ = 426600. Its totient is φ = 420888.

The previous prime is 423727. The next prime is 423749. The reversal of 423743 is 347324.

It is a happy number.

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 423743 - 2⁴ = 423727 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423749) 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, 1193 + ... + 1506.

It is an arithmetic number, because the mean of its divisors is an integer number (106650).

2⁴²³⁷⁴³ is an apocalyptic number.

423743 is a deficient number, since it is larger than the sum of its proper divisors (2857).

423743 is a wasteful number, since it uses less digits than its factorization.

423743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856.

The product of its digits is 2016, while the sum is 23.

The square root of 423743 is about 650.9554516248. The cubic root of 423743 is about 75.1105333148.

The spelling of 423743 in words is "four hundred twenty-three thousand, seven hundred forty-three", and thus it is an iban number.