2020003 has 2 divisors, whose sum is σ = 2020004. Its totient is φ = 2020002.
The previous prime is 2020001. The next prime is 2020019. The reversal of 2020003 is 3000202.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2020003 - 21 = 2020001 is a prime.
Together with 2020001, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (2020001) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010001 + 1010002.
It is an arithmetic number, because the mean of its divisors is an integer number (1010002).
22020003 is an apocalyptic number.
2020003 is a deficient number, since it is larger than the sum of its proper divisors (1).
2020003 is an equidigital number, since it uses as much as digits as its factorization.
2020003 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 12, while the sum is 7.
The square root of 2020003 is about 1421.2680957511. The cubic root of 2020003 is about 126.4107490658.
Adding to 2020003 its reverse (3000202), we get a palindrome (5020205).
The spelling of 2020003 in words is "two million, twenty thousand, three".
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