43003 has 2 divisors, whose sum is σ = 43004. Its totient is φ = 43002.

The previous prime is 42989. The next prime is 43013. The reversal of 43003 is 30034.

It is an a-pointer prime, because the next prime (43013) can be obtained adding 43003 to its sum of digits (10).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43003 - 2⁹ = 42491 is a prime.

It is not a weakly prime, because it can be changed into another prime (43013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21501 + 21502.

It is an arithmetic number, because the mean of its divisors is an integer number (21502).

2⁴³⁰⁰³ is an apocalyptic number.

43003 is a deficient number, since it is larger than the sum of its proper divisors (1).

43003 is an equidigital number, since it uses as much as digits as its factorization.

43003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 43003 is about 207.3716470494. The cubic root of 43003 is about 35.0347953287.

Adding to 43003 its reverse (30034), we get a palindrome (73037).

The spelling of 43003 in words is "forty-three thousand, three", and thus it is an iban number.