1323421044 has 72 divisors (see below), whose sum is σ = 3427569600. Its totient is φ = 397098240.

The previous prime is 1323421037. The next prime is 1323421063. The reversal of 1323421044 is 4401243231.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 145132 + ... + 153980.

Almost surely, 2^1323421044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323421044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1713784800).

1323421044 is an abundant number, since it is smaller than the sum of its proper divisors (2104148556).

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

1323421044 is a wasteful number, since it uses less digits than its factorization.

1323421044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8981 (or 8968 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1323421044 is about 36378.8543524944. The cubic root of 1323421044 is about 1097.9081578517.

Adding to 1323421044 its reverse (4401243231), we get a palindrome (5724664275).

It can be divided in two parts, 132342 and 1044, that added together give a triangular number (133386 = T₅₁₆).

The spelling of 1323421044 in words is "one billion, three hundred twenty-three million, four hundred twenty-one thousand, forty-four".