1324424021 has 4 divisors (see below), whose sum is σ = 1327829100. Its totient is φ = 1321018944.

The previous prime is 1324423999. The next prime is 1324424027. The reversal of 1324424021 is 1204244231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1204244231 = 809 ⋅1488559.

It can be written as a sum of positive squares in 2 ways, for example, as 334377796 + 990046225 = 18286^2 + 31465^2 .

It is a cyclic number.

It is not a de Polignac number, because 1324424021 - 2¹⁸ = 1324161877 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 (1324424027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1701956 + ... + 1702733.

It is an arithmetic number, because the mean of its divisors is an integer number (331957275).

Almost surely, 2^1324424021 is an apocalyptic number.

It is an amenable number.

1324424021 is a deficient number, since it is larger than the sum of its proper divisors (3405079).

1324424021 is an equidigital number, since it uses as much as digits as its factorization.

1324424021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405078.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1324424021 is about 36392.6369063853. The cubic root of 1324424021 is about 1098.1854438978.

Adding to 1324424021 its reverse (1204244231), we get a palindrome (2528668252).

The spelling of 1324424021 in words is "one billion, three hundred twenty-four million, four hundred twenty-four thousand, twenty-one".