4128503 has 4 divisors (see below), whose sum is σ = 4178328. Its totient is φ = 4078680.

The previous prime is 4128493. The next prime is 4128511. The reversal of 4128503 is 3058214.

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 4128503 - 2¹⁰ = 4127479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24788 + ... + 24953.

It is an arithmetic number, because the mean of its divisors is an integer number (1044582).

Almost surely, 2^4128503 is an apocalyptic number.

4128503 is a deficient number, since it is larger than the sum of its proper divisors (49825).

4128503 is an equidigital number, since it uses as much as digits as its factorization.

4128503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49824.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 4128503 is about 2031.8717971368. The cubic root of 4128503 is about 160.4221016056.

The spelling of 4128503 in words is "four million, one hundred twenty-eight thousand, five hundred three".