102100503 has 16 divisors (see below), whose sum is σ = 143222400. Its totient is φ = 64602720.

The previous prime is 102100451. The next prime is 102100513. The reversal of 102100503 is 305001201.

It is not a de Polignac number, because 102100503 - 2⁸ = 102100247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4813 + ... + 15078.

It is an arithmetic number, because the mean of its divisors is an integer number (8951400).

Almost surely, 2^102100503 is an apocalyptic number.

102100503 is a deficient number, since it is larger than the sum of its proper divisors (41121897).

102100503 is a wasteful number, since it uses less digits than its factorization.

102100503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19982.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 102100503 is about 10104.4793532374. The cubic root of 102100503 is about 467.3862809754.

Adding to 102100503 its reverse (305001201), we get a palindrome (407101704).

The spelling of 102100503 in words is "one hundred two million, one hundred thousand, five hundred three".