120012003 has 16 divisors (see below), whose sum is σ = 178830240. Its totient is φ = 79542432.

The previous prime is 120012001. The next prime is 120012007. The reversal of 120012003 is 300210021.

It is a happy number.

It is not a de Polignac number, because 120012003 - 2¹ = 120012001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (120012001) 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, 8176 + ... + 17517.

It is an arithmetic number, because the mean of its divisors is an integer number (11176890).

Almost surely, 2^120012003 is an apocalyptic number.

120012003 is a deficient number, since it is larger than the sum of its proper divisors (58818237).

120012003 is a wasteful number, since it uses less digits than its factorization.

120012003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25875 (or 25869 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 120012003 is about 10954.9989958922. The cubic root of 120012003 is about 493.2588598420.

Adding to 120012003 its reverse (300210021), we get a palindrome (420222024).

It can be divided in two parts, 1200 and 12003, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 120012003 in words is "one hundred twenty million, twelve thousand, three".