726402841 has 2 divisors, whose sum is σ = 726402842. Its totient is φ = 726402840.

The previous prime is 726402839. The next prime is 726402899. The reversal of 726402841 is 148204627.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466387216 + 260015625 = 21596^2 + 16125^2 .

It is a cyclic number.

It is not a de Polignac number, because 726402841 - 2¹ = 726402839 is a prime.

It is a super-2 number, since 2×726402841² = 1055322174825742562, which contains 22 as substring.

Together with 726402839, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 726402797 and 726402806.

It is not a weakly prime, because it can be changed into another prime (726402821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363201420 + 363201421.

It is an arithmetic number, because the mean of its divisors is an integer number (363201421).

Almost surely, 2^726402841 is an apocalyptic number.

It is an amenable number.

726402841 is a deficient number, since it is larger than the sum of its proper divisors (1).

726402841 is an equidigital number, since it uses as much as digits as its factorization.

726402841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 726402841 is about 26951.8615498076. The cubic root of 726402841 is about 898.9299385350.

The spelling of 726402841 in words is "seven hundred twenty-six million, four hundred two thousand, eight hundred forty-one".