726442201 has 4 divisors (see below), whose sum is σ = 746075812. Its totient is φ = 706808592.

The previous prime is 726442193. The next prime is 726442231. The reversal of 726442201 is 102244627.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 657153225 + 69288976 = 25635^2 + 8324^2 .

It is a cyclic number.

It is not a de Polignac number, because 726442201 - 2³ = 726442193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 726442201.

It is not an unprimeable number, because it can be changed into a prime (726442231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9816750 + ... + 9816823.

It is an arithmetic number, because the mean of its divisors is an integer number (186518953).

Almost surely, 2^726442201 is an apocalyptic number.

It is an amenable number.

726442201 is a deficient number, since it is larger than the sum of its proper divisors (19633611).

726442201 is a wasteful number, since it uses less digits than its factorization.

726442201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19633610.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 726442201 is about 26952.5917306666. The cubic root of 726442201 is about 898.9461743578.

Adding to 726442201 its reverse (102244627), we get a palindrome (828686828).

The spelling of 726442201 in words is "seven hundred twenty-six million, four hundred forty-two thousand, two hundred one".