Base | Representation |
---|---|
bin | 1110101011111… |
… | …11001000011000 |
3 | 22120211102021120 |
4 | 13111333020120 |
5 | 223020012440 |
6 | 20120405240 |
7 | 3024134454 |
oct | 725771030 |
9 | 276742246 |
10 | 123204120 |
11 | 63600096 |
12 | 35316820 |
13 | 1c6a9460 |
14 | 12511664 |
15 | ac39dd0 |
hex | 757f218 |
123204120 has 64 divisors (see below), whose sum is σ = 398049120. Its totient is φ = 30326784.
The previous prime is 123204101. The next prime is 123204127. The reversal of 123204120 is 21402321.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a self number, because there is not a number n which added to its sum of digits gives 123204120.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (123204127) 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, 37929 + ... + 41048.
Almost surely, 2123204120 is an apocalyptic number.
123204120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
123204120 is an abundant number, since it is smaller than the sum of its proper divisors (274845000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
123204120 is a wasteful number, since it uses less digits than its factorization.
123204120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 79004 (or 79000 counting only the distinct ones).
The product of its (nonzero) digits is 96, while the sum is 15.
The square root of 123204120 is about 11099.7351319750. The cubic root of 123204120 is about 497.5939335944.
Adding to 123204120 its reverse (21402321), we get a palindrome (144606441).
The spelling of 123204120 in words is "one hundred twenty-three million, two hundred four thousand, one hundred twenty".
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