Base | Representation |
---|---|
bin | 1000000111110011100101 |
3 | 11000011121111 |
4 | 20013303211 |
5 | 1021113000 |
6 | 113345021 |
7 | 24045235 |
oct | 10076345 |
9 | 4004544 |
10 | 2129125 |
11 | 1224709 |
12 | 868171 |
13 | 59714b |
14 | 3d5cc5 |
15 | 2c0cba |
hex | 207ce5 |
2129125 has 8 divisors (see below), whose sum is σ = 2657304. Its totient is φ = 1703200.
The previous prime is 2129123. The next prime is 2129161. The reversal of 2129125 is 5219212.
2129125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 4 ways, for example, as 263169 + 1865956 = 513^2 + 1366^2 .
It is not a de Polignac number, because 2129125 - 21 = 2129123 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 2129096 and 2129105.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2129123) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8392 + ... + 8641.
It is an arithmetic number, because the mean of its divisors is an integer number (332163).
22129125 is an apocalyptic number.
2129125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
It is an amenable number.
2129125 is a deficient number, since it is larger than the sum of its proper divisors (528179).
2129125 is an equidigital number, since it uses as much as digits as its factorization.
2129125 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 17048 (or 17038 counting only the distinct ones).
The product of its digits is 360, while the sum is 22.
The square root of 2129125 is about 1459.1521510795. The cubic root of 2129125 is about 128.6472142851.
It can be divided in two parts, 21291 and 25, that added together give a square (21316 = 1462).
The spelling of 2129125 in words is "two million, one hundred twenty-nine thousand, one hundred twenty-five".
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