1320224143 has 4 divisors (see below), whose sum is σ = 1508827600. Its totient is φ = 1131620688.

The previous prime is 1320224119. The next prime is 1320224161. The reversal of 1320224143 is 3414220231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3414220231 = 25121 ⋅135911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320224143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320204143) 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, 94301718 + ... + 94301731.

It is an arithmetic number, because the mean of its divisors is an integer number (377206900).

Almost surely, 2^1320224143 is an apocalyptic number.

1320224143 is a deficient number, since it is larger than the sum of its proper divisors (188603457).

1320224143 is an equidigital number, since it uses as much as digits as its factorization.

1320224143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188603456.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1320224143 is about 36334.8887847479. Note that the first 3 decimals coincide. The cubic root of 1320224143 is about 1097.0233969217.

Adding to 1320224143 its reverse (3414220231), we get a palindrome (4734444374).

The spelling of 1320224143 in words is "one billion, three hundred twenty million, two hundred twenty-four thousand, one hundred forty-three".