742522217 has 2 divisors, whose sum is σ = 742522218. Its totient is φ = 742522216.

The previous prime is 742522163. The next prime is 742522267. The reversal of 742522217 is 712225247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 644195161 + 98327056 = 25381^2 + 9916^2 .

It is a cyclic number.

It is not a de Polignac number, because 742522217 - 2¹⁴ = 742505833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (742522267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371261108 + 371261109.

It is an arithmetic number, because the mean of its divisors is an integer number (371261109).

Almost surely, 2^742522217 is an apocalyptic number.

It is an amenable number.

742522217 is a deficient number, since it is larger than the sum of its proper divisors (1).

742522217 is an equidigital number, since it uses as much as digits as its factorization.

742522217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 32.

The square root of 742522217 is about 27249.2608523607. The cubic root of 742522217 is about 905.5306420676.

The spelling of 742522217 in words is "seven hundred forty-two million, five hundred twenty-two thousand, two hundred seventeen".