1003873 has 16 divisors (see below), whose sum is σ = 1161216. Its totient is φ = 861120.

The previous prime is 1003841. The next prime is 1003879. The reversal of 1003873 is 3783001.

1003873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1003873 - 2⁵ = 1003841 is a prime.

It is a super-2 number, since 2×1003873² = 2015522000258, which contains 22 as substring.

It is a Duffinian number.

1003873 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1003879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18915 + ... + 18967.

It is an arithmetic number, because the mean of its divisors is an integer number (72576).

2^1003873 is an apocalyptic number.

1003873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1003873 is a deficient number, since it is larger than the sum of its proper divisors (157343).

1003873 is a wasteful number, since it uses less digits than its factorization.

1003873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1003873 is about 1001.9346286061. The cubic root of 1003873 is about 100.1289336896.

Adding to 1003873 its reverse (3783001), we get a palindrome (4786874).

The spelling of 1003873 in words is "one million, three thousand, eight hundred seventy-three".