1283143 has 4 divisors (see below), whose sum is σ = 1358640. Its totient is φ = 1207648.

The previous prime is 1283137. The next prime is 1283159. The reversal of 1283143 is 3413821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1283143 - 2⁵ = 1283111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283173) 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, 37723 + ... + 37756.

It is an arithmetic number, because the mean of its divisors is an integer number (339660).

2^1283143 is an apocalyptic number.

1283143 is a deficient number, since it is larger than the sum of its proper divisors (75497).

1283143 is an equidigital number, since it uses as much as digits as its factorization.

1283143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75496.

The product of its digits is 576, while the sum is 22.

The square root of 1283143 is about 1132.7590211515. The cubic root of 1283143 is about 108.6655009263.

Adding to 1283143 its reverse (3413821), we get a palindrome (4696964).

The spelling of 1283143 in words is "one million, two hundred eighty-three thousand, one hundred forty-three".