2128003 has 4 divisors (see below), whose sum is σ = 2168208. Its totient is φ = 2087800.

The previous prime is 2128001. The next prime is 2128031. The reversal of 2128003 is 3008212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2128003 - 2¹ = 2128001 is a prime.

It is a Duffinian number.

2128003 is a lucky number.

It is a plaindrome in base 11.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (2128001) 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, 20023 + ... + 20128.

It is an arithmetic number, because the mean of its divisors is an integer number (542052).

2^2128003 is an apocalyptic number.

2128003 is a deficient number, since it is larger than the sum of its proper divisors (40205).

2128003 is an equidigital number, since it uses as much as digits as its factorization.

2128003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40204.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2128003 is about 1458.7676305704. The cubic root of 2128003 is about 128.6246122714.

The spelling of 2128003 in words is "two million, one hundred twenty-eight thousand, three".