102520103 has 12 divisors (see below), whose sum is σ = 119486592. Its totient is φ = 87706080.

The previous prime is 102520097. The next prime is 102520139. The reversal of 102520103 is 301025201.

It is a happy number.

It is not a de Polignac number, because 102520103 - 2⁴ = 102520087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102520153) 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 11 ways as a sum of consecutive naturals, for example, 28538 + ... + 31928.

It is an arithmetic number, because the mean of its divisors is an integer number (9957216).

Almost surely, 2^102520103 is an apocalyptic number.

102520103 is a deficient number, since it is larger than the sum of its proper divisors (16966489).

102520103 is an equidigital number, since it uses as much as digits as its factorization.

102520103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022 (or 4015 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 102520103 is about 10125.2211333877. The cubic root of 102520103 is about 468.0256746209.

Adding to 102520103 its reverse (301025201), we get a palindrome (403545304).

The spelling of 102520103 in words is "one hundred two million, five hundred twenty thousand, one hundred three".