4024506721 has 3 divisors (see below), whose sum is σ = 4024570161. Its totient is φ = 4024443282.

The previous prime is 4024506709. The next prime is 4024506727. The reversal of 4024506721 is 1276054204.

The square root of 4024506721 is 63439.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 4024506721 - 2¹⁵ = 4024473953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4024506727) 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 2 ways as a sum of consecutive naturals, for example, 31720 + ... + 95158.

It is an arithmetic number, because the mean of its divisors is an integer number (1341523387).

Almost surely, 2^4024506721 is an apocalyptic number.

4024506721 is the 63439-th square number.

4024506721 is the 31720-th centered octagonal number.

It is an amenable number.

4024506721 is a deficient number, since it is larger than the sum of its proper divisors (63440).

4024506721 is an frugal number, since it uses more digits than its factorization.

4024506721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126878 (or 63439 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The cubic root of 4024506721 is about 1590.6362867445.

The spelling of 4024506721 in words is "four billion, twenty-four million, five hundred six thousand, seven hundred twenty-one".