1428759143 has 4 divisors (see below), whose sum is σ = 1632867600. Its totient is φ = 1224650688.

The previous prime is 1428759091. The next prime is 1428759173. The reversal of 1428759143 is 3419578241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3419578241 = 191 ⋅17903551.

It is a cyclic number.

It is not a de Polignac number, because 1428759143 - 2⁸ = 1428758887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1428759094 and 1428759103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428759173) 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, 102054218 + ... + 102054231.

It is an arithmetic number, because the mean of its divisors is an integer number (408216900).

Almost surely, 2^1428759143 is an apocalyptic number.

1428759143 is a deficient number, since it is larger than the sum of its proper divisors (204108457).

1428759143 is an equidigital number, since it uses as much as digits as its factorization.

1428759143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204108456.

The product of its digits is 241920, while the sum is 44.

The square root of 1428759143 is about 37798.9304478315. The cubic root of 1428759143 is about 1126.2972079778.

The spelling of 1428759143 in words is "one billion, four hundred twenty-eight million, seven hundred fifty-nine thousand, one hundred forty-three".