724242 has 16 divisors (see below), whose sum is σ = 1524960. Its totient is φ = 228672.

The previous prime is 724219. The next prime is 724259. The reversal of 724242 is 242427.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 724242.

It is an unprimeable number.

724242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3063 + ... + 3290.

It is an arithmetic number, because the mean of its divisors is an integer number (95310).

2⁷²⁴²⁴² is an apocalyptic number.

724242 is an abundant number, since it is smaller than the sum of its proper divisors (800718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

724242 is a wasteful number, since it uses less digits than its factorization.

724242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6377.

The product of its digits is 896, while the sum is 21.

The square root of 724242 is about 851.0240889658. The cubic root of 724242 is about 89.8037699950.

Adding to 724242 its reverse (242427), we get a palindrome (966669).

The spelling of 724242 in words is "seven hundred twenty-four thousand, two hundred forty-two", and thus it is an iban number.