726140101 has 2 divisors, whose sum is σ = 726140102. Its totient is φ = 726140100.

The previous prime is 726140099. The next prime is 726140111. The reversal of 726140101 is 101041627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 640596100 + 85544001 = 25310^2 + 9249^2 .

It is a cyclic number.

It is not a de Polignac number, because 726140101 - 2¹ = 726140099 is a prime.

Together with 726140099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726140111) 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, 363070050 + 363070051.

It is an arithmetic number, because the mean of its divisors is an integer number (363070051).

Almost surely, 2^726140101 is an apocalyptic number.

It is an amenable number.

726140101 is a deficient number, since it is larger than the sum of its proper divisors (1).

726140101 is an equidigital number, since it uses as much as digits as its factorization.

726140101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 726140101 is about 26946.9868630984. The cubic root of 726140101 is about 898.8215444409.

Adding to 726140101 its reverse (101041627), we get a palindrome (827181728).

The spelling of 726140101 in words is "seven hundred twenty-six million, one hundred forty thousand, one hundred one".