717042 has 16 divisors (see below), whose sum is σ = 1446912. Its totient is φ = 236880.

The previous prime is 717011. The next prime is 717047. The reversal of 717042 is 240717.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (717047) by changing a digit.

717042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292 + ... + 1232.

It is an arithmetic number, because the mean of its divisors is an integer number (90432).

2⁷¹⁷⁰⁴² is an apocalyptic number.

717042 is an abundant number, since it is smaller than the sum of its proper divisors (729870).

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

717042 is a wasteful number, since it uses less digits than its factorization.

717042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 717042 is about 846.7833252964. The cubic root of 717042 is about 89.5051857632.

Adding to 717042 its reverse (240717), we get a palindrome (957759).

The spelling of 717042 in words is "seven hundred seventeen thousand, forty-two", and thus it is an iban number.