4152030721 has 4 divisors (see below), whose sum is σ = 4183725744. Its totient is φ = 4120335700.

The previous prime is 4152030667. The next prime is 4152030731. The reversal of 4152030721 is 1270302514.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4152030721 - 2¹³ = 4152022529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4152030731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15847315 + ... + 15847576.

It is an arithmetic number, because the mean of its divisors is an integer number (1045931436).

Almost surely, 2^4152030721 is an apocalyptic number.

It is an amenable number.

4152030721 is a deficient number, since it is larger than the sum of its proper divisors (31695023).

4152030721 is a wasteful number, since it uses less digits than its factorization.

4152030721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31695022.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 4152030721 is about 64436.2531576751. The cubic root of 4152030721 is about 1607.2626506085.

The spelling of 4152030721 in words is "four billion, one hundred fifty-two million, thirty thousand, seven hundred twenty-one".