717420142 has 8 divisors (see below), whose sum is σ = 1076957496. Its totient is φ = 358434312.

The previous prime is 717420133. The next prime is 717420157. The reversal of 717420142 is 241024717.

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

It is a self number, because there is not a number n which added to its sum of digits gives 717420142.

It is a congruent number.

It is an unprimeable number.

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, 134613 + ... + 139840.

It is an arithmetic number, because the mean of its divisors is an integer number (134619687).

Almost surely, 2^717420142 is an apocalyptic number.

717420142 is a deficient number, since it is larger than the sum of its proper divisors (359537354).

717420142 is a wasteful number, since it uses less digits than its factorization.

717420142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275762.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 717420142 is about 26784.6997743115. The cubic root of 717420142 is about 895.2091693007.

Adding to 717420142 its reverse (241024717), we get a palindrome (958444859).

The spelling of 717420142 in words is "seven hundred seventeen million, four hundred twenty thousand, one hundred forty-two".