2001240203 has 4 divisors (see below), whose sum is σ = 2004214488. Its totient is φ = 1998265920.

The previous prime is 2001240181. The next prime is 2001240209. The reversal of 2001240203 is 3020421002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001240203 - 2⁶ = 2001240139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001240209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1486133 + ... + 1487478.

It is an arithmetic number, because the mean of its divisors is an integer number (501053622).

Almost surely, 2^2001240203 is an apocalyptic number.

2001240203 is a deficient number, since it is larger than the sum of its proper divisors (2974285).

2001240203 is an equidigital number, since it uses as much as digits as its factorization.

2001240203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974284.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2001240203 is about 44735.2232921665. The cubic root of 2001240203 is about 1260.1814223941.

Adding to 2001240203 its reverse (3020421002), we get a palindrome (5021661205).

The spelling of 2001240203 in words is "two billion, one million, two hundred forty thousand, two hundred three".