717730042 has 16 divisors (see below), whose sum is σ = 1159644672. Its totient is φ = 332188560.

The previous prime is 717729989. The next prime is 717730043. The reversal of 717730042 is 240037717.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 717729986 and 717730013.

It is not an unprimeable number, because it can be changed into a prime (717730043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250233 + ... + 253084.

It is an arithmetic number, because the mean of its divisors is an integer number (72477792).

Almost surely, 2^717730042 is an apocalyptic number.

717730042 is a deficient number, since it is larger than the sum of its proper divisors (441914630).

717730042 is a wasteful number, since it uses less digits than its factorization.

717730042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503373.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 717730042 is about 26790.4841688238. The cubic root of 717730042 is about 895.3380502585.

Adding to 717730042 its reverse (240037717), we get a palindrome (957767759).

The spelling of 717730042 in words is "seven hundred seventeen million, seven hundred thirty thousand, forty-two".