1323243420 has 48 divisors (see below), whose sum is σ = 3741782688. Its totient is φ = 349369600.

The previous prime is 1323243409. The next prime is 1323243437. The reversal of 1323243420 is 243423231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103119 + ... + 115238.

It is an arithmetic number, because the mean of its divisors is an integer number (77953806).

Almost surely, 2^1323243420 is an apocalyptic number.

1323243420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323243420 is an abundant number, since it is smaller than the sum of its proper divisors (2418539268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323243420 is a wasteful number, since it uses less digits than its factorization.

1323243420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218470 (or 218468 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 1323243420 is about 36376.4129622479. The cubic root of 1323243420 is about 1097.8590367840.

Adding to 1323243420 its reverse (243423231), we get a palindrome (1566666651).

The spelling of 1323243420 in words is "one billion, three hundred twenty-three million, two hundred forty-three thousand, four hundred twenty".