120003 has 16 divisors (see below), whose sum is σ = 183456. Its totient is φ = 69120.

The previous prime is 119993. The next prime is 120011. The reversal of 120003 is 300021.

It is not a de Polignac number, because 120003 - 2⁵ = 119971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 119973 and 120000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120103) 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, 573 + ... + 753.

It is an arithmetic number, because the mean of its divisors is an integer number (11466).

2¹²⁰⁰⁰³ is an apocalyptic number.

120003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

120003 is a deficient number, since it is larger than the sum of its proper divisors (63453).

120003 is a wasteful number, since it uses less digits than its factorization.

120003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214.

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 120003 is about 346.4144916137. The cubic root of 120003 is about 49.3246525185.

Adding to 120003 its reverse (300021), we get a palindrome (420024).

The spelling of 120003 in words is "one hundred twenty thousand, three", and thus it is an iban number.