1323342421 has 4 divisors (see below), whose sum is σ = 1380879072. Its totient is φ = 1265805772.

The previous prime is 1323342409. The next prime is 1323342431. The reversal of 1323342421 is 1242433231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1323342421 - 2⁵ = 1323342389 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 (1323342431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28768291 + ... + 28768336.

It is an arithmetic number, because the mean of its divisors is an integer number (345219768).

Almost surely, 2^1323342421 is an apocalyptic number.

It is an amenable number.

1323342421 is a deficient number, since it is larger than the sum of its proper divisors (57536651).

1323342421 is an equidigital number, since it uses as much as digits as its factorization.

1323342421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57536650.

The product of its digits is 3456, while the sum is 25.

The square root of 1323342421 is about 36377.7737224256. The cubic root of 1323342421 is about 1097.8864155793.

Adding to 1323342421 its reverse (1242433231), we get a palindrome (2565775652).

The spelling of 1323342421 in words is "one billion, three hundred twenty-three million, three hundred forty-two thousand, four hundred twenty-one".