427040321 has 4 divisors (see below), whose sum is σ = 434041044. Its totient is φ = 420039600.

The previous prime is 427040281. The next prime is 427040329. The reversal of 427040321 is 123040724.

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 5313025 + 421727296 = 2305^2 + 20536^2 .

It is a cyclic number.

It is not a de Polignac number, because 427040321 - 2¹⁴ = 427023937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427040329) 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, 3500270 + ... + 3500391.

It is an arithmetic number, because the mean of its divisors is an integer number (108510261).

Almost surely, 2^427040321 is an apocalyptic number.

It is an amenable number.

427040321 is a deficient number, since it is larger than the sum of its proper divisors (7000723).

427040321 is an equidigital number, since it uses as much as digits as its factorization.

427040321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000722.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 427040321 is about 20664.9539317173. The cubic root of 427040321 is about 753.0485228519.

The spelling of 427040321 in words is "four hundred twenty-seven million, forty thousand, three hundred twenty-one".