9421024321 has 4 divisors (see below), whose sum is σ = 9650805444. Its totient is φ = 9191243200.

The previous prime is 9421024297. The next prime is 9421024343. The reversal of 9421024321 is 1234201249.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4793623696 + 4627400625 = 69236^2 + 68025^2 .

It is a cyclic number.

It is not a de Polignac number, because 9421024321 - 2⁵ = 9421024289 is a prime.

It is a super-2 number, since 2×9421024321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9421024321.

It is not an unprimeable number, because it can be changed into a prime (9421024021) 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 3 ways as a sum of consecutive naturals, for example, 114890500 + ... + 114890581.

It is an arithmetic number, because the mean of its divisors is an integer number (2412701361).

Almost surely, 2^9421024321 is an apocalyptic number.

It is an amenable number.

9421024321 is a deficient number, since it is larger than the sum of its proper divisors (229781123).

9421024321 is a wasteful number, since it uses less digits than its factorization.

9421024321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229781122.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 9421024321 is about 97061.9612464121. The cubic root of 9421024321 is about 2112.0265579364.

The spelling of 9421024321 in words is "nine billion, four hundred twenty-one million, twenty-four thousand, three hundred twenty-one".