724243 has 4 divisors (see below), whose sum is σ = 779968. Its totient is φ = 668520.

The previous prime is 724219. The next prime is 724259. The reversal of 724243 is 342427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342427 = 179 ⋅1913.

It is a cyclic number.

It is not a de Polignac number, because 724243 - 2⁵ = 724211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724643) 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, 27843 + ... + 27868.

It is an arithmetic number, because the mean of its divisors is an integer number (194992).

2⁷²⁴²⁴³ is an apocalyptic number.

724243 is a deficient number, since it is larger than the sum of its proper divisors (55725).

724243 is a wasteful number, since it uses less digits than its factorization.

724243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55724.

The product of its digits is 1344, while the sum is 22.

The square root of 724243 is about 851.0246764930. The cubic root of 724243 is about 89.8038113273.

It can be divided in two parts, 72424 and 3, that added together give a palindrome (72427).

The spelling of 724243 in words is "seven hundred twenty-four thousand, two hundred forty-three", and thus it is an iban number.