742593217 has 2 divisors, whose sum is σ = 742593218. Its totient is φ = 742593216.

The previous prime is 742593197. The next prime is 742593223. The reversal of 742593217 is 712395247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 642673201 + 99920016 = 25351^2 + 9996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742593217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 742593217.

It is not a weakly prime, because it can be changed into another prime (742593277) by changing a digit.

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 as a sum of consecutive naturals, namely, 371296608 + 371296609.

It is an arithmetic number, because the mean of its divisors is an integer number (371296609).

Almost surely, 2^742593217 is an apocalyptic number.

It is an amenable number.

742593217 is a deficient number, since it is larger than the sum of its proper divisors (1).

742593217 is an equidigital number, since it uses as much as digits as its factorization.

742593217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 40.

The square root of 742593217 is about 27250.5636088504. The cubic root of 742593217 is about 905.5595034381.

The spelling of 742593217 in words is "seven hundred forty-two million, five hundred ninety-three thousand, two hundred seventeen".