726238241 has 2 divisors, whose sum is σ = 726238242. Its totient is φ = 726238240.

The previous prime is 726238199. The next prime is 726238267. The reversal of 726238241 is 142832627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 575808016 + 150430225 = 23996^2 + 12265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726238241 is a prime.

It is a Chen prime.

It is equal to p_37540079 and since 726238241 and 37540079 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (726238141) 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, 363119120 + 363119121.

It is an arithmetic number, because the mean of its divisors is an integer number (363119121).

Almost surely, 2^726238241 is an apocalyptic number.

It is an amenable number.

726238241 is a deficient number, since it is larger than the sum of its proper divisors (1).

726238241 is an equidigital number, since it uses as much as digits as its factorization.

726238241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 726238241 is about 26948.8077843900. The cubic root of 726238241 is about 898.8620354208.

The spelling of 726238241 in words is "seven hundred twenty-six million, two hundred thirty-eight thousand, two hundred forty-one".