1320401143 has 8 divisors (see below), whose sum is σ = 1392070400. Its totient is φ = 1248949368.

The previous prime is 1320401141. The next prime is 1320401177. The reversal of 1320401143 is 3411040231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320401143 - 2¹ = 1320401141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320401143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320401141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41823 + ... + 66256.

It is an arithmetic number, because the mean of its divisors is an integer number (174008800).

Almost surely, 2^1320401143 is an apocalyptic number.

1320401143 is a deficient number, since it is larger than the sum of its proper divisors (71669257).

1320401143 is a wasteful number, since it uses less digits than its factorization.

1320401143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108741.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1320401143 is about 36337.3243786606. The cubic root of 1320401143 is about 1097.0724200277.

Adding to 1320401143 its reverse (3411040231), we get a palindrome (4731441374).

The spelling of 1320401143 in words is "one billion, three hundred twenty million, four hundred one thousand, one hundred forty-three".