102001125 has 16 divisors (see below), whose sum is σ = 169730496. Its totient is φ = 54400400.

The previous prime is 102001121. The next prime is 102001127. The reversal of 102001125 is 521100201.

It is not a de Polignac number, because 102001125 - 2² = 102001121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102001125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001121) 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 15 ways as a sum of consecutive naturals, for example, 135627 + ... + 136376.

It is an arithmetic number, because the mean of its divisors is an integer number (10608156).

Almost surely, 2^102001125 is an apocalyptic number.

102001125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102001125 is a deficient number, since it is larger than the sum of its proper divisors (67729371).

102001125 is an equidigital number, since it uses as much as digits as its factorization.

102001125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272021 (or 272011 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 102001125 is about 10099.5606340078. The cubic root of 102001125 is about 467.2345905971.

Adding to 102001125 its reverse (521100201), we get a palindrome (623101326).

It can be divided in two parts, 10200 and 1125, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 102001125 in words is "one hundred two million, one thousand, one hundred twenty-five".