20240003 has 4 divisors (see below), whose sum is σ = 23131440. Its totient is φ = 17348568.

The previous prime is 20239991. The next prime is 20240021. The reversal of 20240003 is 30004202.

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 20240003 - 2⁴ = 20239987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20240083) 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, 1445708 + ... + 1445721.

It is an arithmetic number, because the mean of its divisors is an integer number (5782860).

Almost surely, 2^20240003 is an apocalyptic number.

20240003 is a deficient number, since it is larger than the sum of its proper divisors (2891437).

20240003 is an equidigital number, since it uses as much as digits as its factorization.

20240003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891436.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20240003 is about 4498.8890850965. The cubic root of 20240003 is about 272.5232278267.

Adding to 20240003 its reverse (30004202), we get a palindrome (50244205).

The spelling of 20240003 in words is "twenty million, two hundred forty thousand, three".