1428039 has 12 divisors (see below), whose sum is σ = 2084472. Its totient is φ = 942000.

The previous prime is 1428029. The next prime is 1428041. The reversal of 1428039 is 9308241.

It is not a de Polignac number, because 1428039 - 2⁷ = 1427911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124 + ... + 1694.

It is an arithmetic number, because the mean of its divisors is an integer number (173706).

2^1428039 is an apocalyptic number.

1428039 is a deficient number, since it is larger than the sum of its proper divisors (656433).

1428039 is a wasteful number, since it uses less digits than its factorization.

1428039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678 (or 1675 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1428039 is about 1195.0058577262. The cubic root of 1428039 is about 112.6107945529.

The spelling of 1428039 in words is "one million, four hundred twenty-eight thousand, thirty-nine".