720434241 has 6 divisors (see below), whose sum is σ = 1040627250. Its totient is φ = 480289488.

The previous prime is 720434233. The next prime is 720434249. The reversal of 720434241 is 142434027.

It is an interprime number because it is at equal distance from previous prime (720434233) and next prime (720434249).

It can be written as a sum of positive squares in only one way, i.e., 703787841 + 16646400 = 26529^2 + 4080^2 .

It is not a de Polignac number, because 720434241 - 2³ = 720434233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (720434249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40024116 + ... + 40024133.

It is an arithmetic number, because the mean of its divisors is an integer number (173437875).

Almost surely, 2^720434241 is an apocalyptic number.

It is an amenable number.

720434241 is a deficient number, since it is larger than the sum of its proper divisors (320193009).

720434241 is a wasteful number, since it uses less digits than its factorization.

720434241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80048255 (or 80048252 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 720434241 is about 26840.9061136170. The cubic root of 720434241 is about 896.4610991808.

Adding to 720434241 its reverse (142434027), we get a palindrome (862868268).

The spelling of 720434241 in words is "seven hundred twenty million, four hundred thirty-four thousand, two hundred forty-one".