102005603 has 12 divisors (see below), whose sum is σ = 120608352. Its totient is φ = 85997520.

The previous prime is 102005597. The next prime is 102005611. The reversal of 102005603 is 306500201.

It is not a de Polignac number, because 102005603 - 2¹² = 102001507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102005653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14075 + ... + 20052.

It is an arithmetic number, because the mean of its divisors is an integer number (10050696).

Almost surely, 2^102005603 is an apocalyptic number.

102005603 is a deficient number, since it is larger than the sum of its proper divisors (18602749).

102005603 is an equidigital number, since it uses as much as digits as its factorization.

102005603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34202 (or 34195 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 102005603 is about 10099.7823243870. The cubic root of 102005603 is about 467.2414279265.

Adding to 102005603 its reverse (306500201), we get a palindrome (408505804).

The spelling of 102005603 in words is "one hundred two million, five thousand, six hundred three".