1323142144 has 22 divisors (see below), whose sum is σ = 2644994204. Its totient is φ = 661570560.

The previous prime is 1323142133. The next prime is 1323142157. The reversal of 1323142144 is 4412413231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645042 + ... + 647089.

Almost surely, 2^1323142144 is an apocalyptic number.

It is an amenable number.

1323142144 is a deficient number, since it is larger than the sum of its proper divisors (1321852060).

1323142144 is an equidigital number, since it uses as much as digits as its factorization.

1323142144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292151 (or 1292133 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 1323142144 is about 36375.0208797191. The cubic root of 1323142144 is about 1097.8310274229.

Adding to 1323142144 its reverse (4412413231), we get a palindrome (5735555375).

The spelling of 1323142144 in words is "one billion, three hundred twenty-three million, one hundred forty-two thousand, one hundred forty-four".