1296000003 has 4 divisors (see below), whose sum is σ = 1728000008. Its totient is φ = 864000000.

The previous prime is 1295999987. The next prime is 1296000011. The reversal of 1296000003 is 3000006921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3000006921 = 3 ⋅1000002307.

It is not a de Polignac number, because 1296000003 - 2⁴ = 1295999987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296000023) 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, 215999998 + ... + 216000003.

It is an arithmetic number, because the mean of its divisors is an integer number (432000002).

Almost surely, 2^1296000003 is an apocalyptic number.

1296000003 is a deficient number, since it is larger than the sum of its proper divisors (432000005).

1296000003 is an equidigital number, since it uses as much as digits as its factorization.

1296000003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432000004.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1296000003 is about 36000.0000416667. Note that the first 4 decimals coincide. The cubic root of 1296000003 is about 1090.2723565405.

Adding to 1296000003 its reverse (3000006921), we get a palindrome (4296006924).

The spelling of 1296000003 in words is "one billion, two hundred ninety-six million, three", and thus it is an aban number.