4320081 has 24 divisors (see below), whose sum is σ = 6658080. Its totient is φ = 2766960.

The previous prime is 4320079. The next prime is 4320097. The reversal of 4320081 is 1800234.

It is a happy number.

It is not a de Polignac number, because 4320081 - 2¹ = 4320079 is a prime.

It is a super-2 number, since 2×4320081² = 37326199693122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4320061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70791 + ... + 70851.

It is an arithmetic number, because the mean of its divisors is an integer number (277420).

Almost surely, 2^4320081 is an apocalyptic number.

It is an amenable number.

4320081 is a deficient number, since it is larger than the sum of its proper divisors (2337999).

4320081 is an equidigital number, since it uses as much as digits as its factorization.

4320081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 4320081 is about 2078.4804545629. The cubic root of 4320081 is about 162.8660748959.

The spelling of 4320081 in words is "four million, three hundred twenty thousand, eighty-one".