4309242021 has 24 divisors (see below), whose sum is σ = 7117745024. Its totient is φ = 2461013280.

The previous prime is 4309242019. The next prime is 4309242031. The reversal of 4309242021 is 1202429034.

4309242021 is a `hidden beast` number, since 430 + 9 + 24 + 202 + 1 = 666.

It is not a de Polignac number, because 4309242021 - 2¹ = 4309242019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4309242001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96675 + ... + 134031.

Almost surely, 2^4309242021 is an apocalyptic number.

It is an amenable number.

4309242021 is a deficient number, since it is larger than the sum of its proper divisors (2808503003).

4309242021 is a wasteful number, since it uses less digits than its factorization.

4309242021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39201 (or 39198 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 4309242021 is about 65644.8171678465. The cubic root of 4309242021 is about 1627.2975180434.

The spelling of 4309242021 in words is "four billion, three hundred nine million, two hundred forty-two thousand, twenty-one".