3242049721 has 9 divisors (see below), whose sum is σ = 3281407599. Its totient is φ = 3203160384.

The previous prime is 3242049689. The next prime is 3242049731. The reversal of 3242049721 is 1279402423.

The square root of 3242049721 is 56939.

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

It can be written as a sum of positive squares in only one way, i.e., 1455804025 + 1786245696 = 38155^2 + 42264^2 .

It is not a de Polignac number, because 3242049721 - 2⁵ = 3242049689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3242049731) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5522790 + ... + 5523376.

Almost surely, 2^3242049721 is an apocalyptic number.

3242049721 is the 56939-th square number.

3242049721 is the 28470-th centered octagonal number.

It is an amenable number.

3242049721 is a deficient number, since it is larger than the sum of its proper divisors (39357878).

3242049721 is an frugal number, since it uses more digits than its factorization.

3242049721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The cubic root of 3242049721 is about 1480.0392187379.

The spelling of 3242049721 in words is "three billion, two hundred forty-two million, forty-nine thousand, seven hundred twenty-one".