1320143 has 8 divisors (see below), whose sum is σ = 1474176. Its totient is φ = 1171800.

The previous prime is 1320127. The next prime is 1320149. The reversal of 1320143 is 3410231.

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 1320143 - 2⁴ = 1320127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320149) 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, 923 + ... + 1868.

It is an arithmetic number, because the mean of its divisors is an integer number (184272).

2^1320143 is an apocalyptic number.

1320143 is a deficient number, since it is larger than the sum of its proper divisors (154033).

1320143 is a wasteful number, since it uses less digits than its factorization.

1320143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1320143 is about 1148.9747603842. The cubic root of 1320143 is about 109.7000921548.

Adding to 1320143 its reverse (3410231), we get a palindrome (4730374).

The spelling of 1320143 in words is "one million, three hundred twenty thousand, one hundred forty-three".