720204241 has 4 divisors (see below), whose sum is σ = 745038900. Its totient is φ = 695369584.

The previous prime is 720204229. The next prime is 720204263. The reversal of 720204241 is 142402027.

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 197121600 + 523082641 = 14040^2 + 22871^2 .

It is a cyclic number.

It is not a de Polignac number, because 720204241 - 2¹¹ = 720202193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720204271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12417286 + ... + 12417343.

It is an arithmetic number, because the mean of its divisors is an integer number (186259725).

Almost surely, 2^720204241 is an apocalyptic number.

It is an amenable number.

720204241 is a deficient number, since it is larger than the sum of its proper divisors (24834659).

720204241 is a wasteful number, since it uses less digits than its factorization.

720204241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24834658.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 720204241 is about 26836.6212664709. The cubic root of 720204241 is about 896.3656900572.

Adding to 720204241 its reverse (142402027), we get a palindrome (862606268).

The spelling of 720204241 in words is "seven hundred twenty million, two hundred four thousand, two hundred forty-one".