720450041 has 4 divisors (see below), whose sum is σ = 734043492. Its totient is φ = 706856592.

The previous prime is 720450019. The next prime is 720450061. The reversal of 720450041 is 140054027.

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 564300025 + 156150016 = 23755^2 + 12496^2 .

It is a cyclic number.

It is not a de Polignac number, because 720450041 - 2²⁶ = 653341177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720449989 and 720450016.

It is not an unprimeable number, because it can be changed into a prime (720450001) 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, 6796646 + ... + 6796751.

It is an arithmetic number, because the mean of its divisors is an integer number (183510873).

Almost surely, 2^720450041 is an apocalyptic number.

It is an amenable number.

720450041 is a deficient number, since it is larger than the sum of its proper divisors (13593451).

720450041 is a wasteful number, since it uses less digits than its factorization.

720450041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13593450.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 720450041 is about 26841.2004388775. The cubic root of 720450041 is about 896.4676526273.

The spelling of 720450041 in words is "seven hundred twenty million, four hundred fifty thousand, forty-one".