12147003 has 20 divisors (see below), whose sum is σ = 19796568. Its totient is φ = 7361280.

The previous prime is 12147001. The next prime is 12147007. The reversal of 12147003 is 30074121.

It is not a de Polignac number, because 12147003 - 2¹ = 12147001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12147001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5926 + ... + 7707.

Almost surely, 2^12147003 is an apocalyptic number.

12147003 is a deficient number, since it is larger than the sum of its proper divisors (7649565).

12147003 is a wasteful number, since it uses less digits than its factorization.

12147003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13656 (or 13647 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12147003 is about 3485.2550839214. The cubic root of 12147003 is about 229.8739258643.

The spelling of 12147003 in words is "twelve million, one hundred forty-seven thousand, three".