4258284000721 has 3 divisors (see below), whose sum is σ = 4258286064283. Its totient is φ = 4258281937160.

The previous prime is 4258284000689. The next prime is 4258284000727. The reversal of 4258284000721 is 1270004828524.

The square root of 4258284000721 is 2063561.

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 can be written as a sum of positive squares in only one way, i.e., 825119706321 + 3433164294400 = 908361^2 + 1852880^2 .

It is not a de Polignac number, because 4258284000721 - 2⁵ = 4258284000689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4258284000727) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1031781 + ... + 3095341.

Almost surely, 2^{4258284000721} is an apocalyptic number.

4258284000721 is the 2063561-st square number.

4258284000721 is the 1031781-st centered octagonal number.

It is an amenable number.

4258284000721 is a deficient number, since it is larger than the sum of its proper divisors (2063562).

4258284000721 is an frugal number, since it uses more digits than its factorization.

4258284000721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4127122 (or 2063561 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 43.

The spelling of 4258284000721 in words is "four trillion, two hundred fifty-eight billion, two hundred eighty-four million, seven hundred twenty-one", and thus it is an aban number.