1428143 has 2 divisors, whose sum is σ = 1428144. Its totient is φ = 1428142.

The previous prime is 1428137. The next prime is 1428151. The reversal of 1428143 is 3418241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428143 - 2⁴ = 1428127 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428113) by changing a digit.

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, 714071 + 714072.

It is an arithmetic number, because the mean of its divisors is an integer number (714072).

2^1428143 is an apocalyptic number.

1428143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428143 is an equidigital number, since it uses as much as digits as its factorization.

1428143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

The square root of 1428143 is about 1195.0493713650. The cubic root of 1428143 is about 112.6135281940.

The spelling of 1428143 in words is "one million, four hundred twenty-eight thousand, one hundred forty-three".