1428203 has 6 divisors (see below), whose sum is σ = 1661436. Its totient is φ = 1224132.

The previous prime is 1428199. The next prime is 1428209. The reversal of 1428203 is 3028241.

It is not a de Polignac number, because 1428203 - 2² = 1428199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1428209) 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 5 ways as a sum of consecutive naturals, for example, 14525 + ... + 14622.

It is an arithmetic number, because the mean of its divisors is an integer number (276906).

2^1428203 is an apocalyptic number.

1428203 is a deficient number, since it is larger than the sum of its proper divisors (233233).

1428203 is an equidigital number, since it uses as much as digits as its factorization.

1428203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29161 (or 29154 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1428203 is about 1195.0744746667. The cubic root of 1428203 is about 112.6151052343.

The spelling of 1428203 in words is "one million, four hundred twenty-eight thousand, two hundred three".