11720003 has 4 divisors (see below), whose sum is σ = 11745888. Its totient is φ = 11694120.

The previous prime is 11719999. The next prime is 11720029. The reversal of 11720003 is 30002711.

11720003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30002711 = 233 ⋅128767.

It is a cyclic number.

It is not a de Polignac number, because 11720003 - 2² = 11719999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11720003.

It is not an unprimeable number, because it can be changed into a prime (11720053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12251 + ... + 13172.

It is an arithmetic number, because the mean of its divisors is an integer number (2936472).

Almost surely, 2^11720003 is an apocalyptic number.

11720003 is a deficient number, since it is larger than the sum of its proper divisors (25885).

11720003 is an equidigital number, since it uses as much as digits as its factorization.

11720003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25884.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 11720003 is about 3423.4489918794. The cubic root of 11720003 is about 227.1481692896.

Adding to 11720003 its reverse (30002711), we get a palindrome (41722714).

The spelling of 11720003 in words is "eleven million, seven hundred twenty thousand, three".