1260003 has 4 divisors (see below), whose sum is σ = 1680008. Its totient is φ = 840000.

The previous prime is 1259983. The next prime is 1260011. The reversal of 1260003 is 3000621.

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

It is not a de Polignac number, because 1260003 - 2⁶ = 1259939 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210003) 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, 209998 + ... + 210003.

It is an arithmetic number, because the mean of its divisors is an integer number (420002).

2^1260003 is an apocalyptic number.

1260003 is a deficient number, since it is larger than the sum of its proper divisors (420005).

1260003 is an equidigital number, since it uses as much as digits as its factorization.

1260003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420004.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1260003 is about 1122.4985523376. The cubic root of 1260003 is about 108.0083155463.

Adding to 1260003 its reverse (3000621), we get a palindrome (4260624).

The spelling of 1260003 in words is "one million, two hundred sixty thousand, three".