717140426 has 8 divisors (see below), whose sum is σ = 1077192480. Its totient is φ = 358076268.

The previous prime is 717140423. The next prime is 717140441. The reversal of 717140426 is 624041717.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×717140426² = 1028580781206922952, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 717140392 and 717140401.

It is not an unprimeable number, because it can be changed into a prime (717140423) 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 3 ways as a sum of consecutive naturals, for example, 245156 + ... + 248063.

It is an arithmetic number, because the mean of its divisors is an integer number (134649060).

Almost surely, 2^717140426 is an apocalyptic number.

717140426 is a deficient number, since it is larger than the sum of its proper divisors (360052054).

717140426 is a wasteful number, since it uses less digits than its factorization.

717140426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493948.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 717140426 is about 26779.4777021510. The cubic root of 717140426 is about 895.0928093679.

The spelling of 717140426 in words is "seven hundred seventeen million, one hundred forty thousand, four hundred twenty-six".