426532321 has 2 divisors, whose sum is σ = 426532322. Its totient is φ = 426532320.

The previous prime is 426532303. The next prime is 426532343. The reversal of 426532321 is 123235624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425184400 + 1347921 = 20620^2 + 1161^2 .

It is a cyclic number.

It is not a de Polignac number, because 426532321 - 2⁵ = 426532289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426532321.

It is not a weakly prime, because it can be changed into another prime (426532391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213266160 + 213266161.

It is an arithmetic number, because the mean of its divisors is an integer number (213266161).

Almost surely, 2^426532321 is an apocalyptic number.

It is an amenable number.

426532321 is a deficient number, since it is larger than the sum of its proper divisors (1).

426532321 is an equidigital number, since it uses as much as digits as its factorization.

426532321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 28.

The square root of 426532321 is about 20652.6589329316. The cubic root of 426532321 is about 752.7497997397.

Adding to 426532321 its reverse (123235624), we get a palindrome (549767945).

The spelling of 426532321 in words is "four hundred twenty-six million, five hundred thirty-two thousand, three hundred twenty-one".