| Base | Representation |
|---|---|
| bin | 100001011110010… |
| … | …1011100000110000 |
| 3 | 2220021111122000120 |
| 4 | 1002330223200300 |
| 5 | 4300014444440 |
| 6 | 303242050240 |
| 7 | 36556032444 |
| oct | 10274534060 |
| 9 | 2807448016 |
| 10 | 1123203120 |
| 11 | 527023146 |
| 12 | 2741a9980 |
| 13 | 14b916040 |
| 14 | a925c824 |
| 15 | 6891add0 |
| hex | 42f2b830 |
1123203120 has 160 divisors (see below), whose sum is σ = 3775300032. Its totient is φ = 274599936.
The previous prime is 1123203097. The next prime is 1123203127. The reversal of 1123203120 is 213023211.
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 1123203120.
It is not an unprimeable number, because it can be changed into a prime (1123203127) 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 31 ways as a sum of consecutive naturals, for example, 488694 + ... + 490986.
Almost surely, 21123203120 is an apocalyptic number.
1123203120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1123203120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887650016).
1123203120 is an abundant number, since it is smaller than the sum of its proper divisors (2652096912).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1123203120 is a wasteful number, since it uses less digits than its factorization.
1123203120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2479 (or 2473 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 1123203120 is about 33514.2226524799. Note that the first 3 decimals coincide. The cubic root of 1123203120 is about 1039.4878888961.
Adding to 1123203120 its reverse (213023211), we get a palindrome (1336226331).
It can be divided in two parts, 112320 and 3120, that multiplied together give a square (350438400 = 187202).
The spelling of 1123203120 in words is "one billion, one hundred twenty-three million, two hundred three thousand, one hundred twenty".
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