717142427 has 2 divisors, whose sum is σ = 717142428. Its totient is φ = 717142426.

The previous prime is 717142423. The next prime is 717142429. The reversal of 717142427 is 724241717.

It is a strong prime.

It is an emirp because it is prime and its reverse (724241717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 717142427 - 2² = 717142423 is a prime.

Together with 717142429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (717142423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358571213 + 358571214.

It is an arithmetic number, because the mean of its divisors is an integer number (358571214).

Almost surely, 2^717142427 is an apocalyptic number.

717142427 is a deficient number, since it is larger than the sum of its proper divisors (1).

717142427 is an equidigital number, since it uses as much as digits as its factorization.

717142427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21952, while the sum is 35.

The square root of 717142427 is about 26779.5150628237. The cubic root of 717142427 is about 895.0936418776.

The spelling of 717142427 in words is "seven hundred seventeen million, one hundred forty-two thousand, four hundred twenty-seven".