100003125 has 24 divisors (see below), whose sum is σ = 166676832. Its totient is φ = 53330000.

The previous prime is 100003091. The next prime is 100003151. The reversal of 100003125 is 521300001.

It is not a de Polignac number, because 100003125 - 2⁹ = 100002613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100003125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4042 + ... + 14708.

It is an arithmetic number, because the mean of its divisors is an integer number (6944868).

Almost surely, 2^100003125 is an apocalyptic number.

100003125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100003125 is a deficient number, since it is larger than the sum of its proper divisors (66673707).

100003125 is an frugal number, since it uses more digits than its factorization.

100003125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10695 (or 10675 counting only the distinct ones).

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

The square root of 100003125 is about 10000.1562487793. The cubic root of 100003125 is about 464.1637182993.

Adding to 100003125 its reverse (521300001), we get a palindrome (621303126).

It can be divided in two parts, 100003 and 125, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 100003125 in words is "one hundred million, three thousand, one hundred twenty-five".