102020003 has 4 divisors (see below), whose sum is σ = 102609888. Its totient is φ = 101430120.

The previous prime is 102019997. The next prime is 102020021. The reversal of 102020003 is 300020201.

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 102020003 - 2⁸ = 102019747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102020053) 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, 294683 + ... + 295028.

It is an arithmetic number, because the mean of its divisors is an integer number (25652472).

Almost surely, 2^102020003 is an apocalyptic number.

102020003 is a deficient number, since it is larger than the sum of its proper divisors (589885).

102020003 is an equidigital number, since it uses as much as digits as its factorization.

102020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589884.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 102020003 is about 10100.4951858807. The cubic root of 102020003 is about 467.2634135162.

Adding to 102020003 its reverse (300020201), we get a palindrome (402040204).

The spelling of 102020003 in words is "one hundred two million, twenty thousand, three".