1428303 has 4 divisors (see below), whose sum is σ = 1904408. Its totient is φ = 952200.

The previous prime is 1428281. The next prime is 1428359. The reversal of 1428303 is 3038241.

It is a happy number.

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

It is not a de Polignac number, because 1428303 - 2²⁰ = 379727 is a prime.

It is a D-number.

It is a Duffinian number.

1428303 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428703) 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 in 3 ways as a sum of consecutive naturals, for example, 238048 + ... + 238053.

It is an arithmetic number, because the mean of its divisors is an integer number (476102).

2^1428303 is an apocalyptic number.

1428303 is a deficient number, since it is larger than the sum of its proper divisors (476105).

1428303 is an equidigital number, since it uses as much as digits as its factorization.

1428303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476104.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1428303 is about 1195.1163123311. The cubic root of 1428303 is about 112.6177335366.

The spelling of 1428303 in words is "one million, four hundred twenty-eight thousand, three hundred three".