Base | Representation |
---|---|
bin | 100101111100001010111 |
3 | 2100011101022 |
4 | 10233201113 |
5 | 304240343 |
6 | 42351355 |
7 | 13365362 |
oct | 4574127 |
9 | 2304338 |
10 | 1243223 |
11 | 77a063 |
12 | 4bb55b |
13 | 346b47 |
14 | 2450d9 |
15 | 198568 |
hex | 12f857 |
1243223 has 4 divisors (see below), whose sum is σ = 1259040. Its totient is φ = 1227408.
The previous prime is 1243211. The next prime is 1243271. The reversal of 1243223 is 3223421.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3223421 = 17 ⋅189613.
It is a cyclic number.
It is not a de Polignac number, because 1243223 - 212 = 1239127 is a prime.
It is a d-powerful number, because it can be written as 1 + 210 + 43 + 33 + 214 + 220 + 311 .
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1243273) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7790 + ... + 7947.
It is an arithmetic number, because the mean of its divisors is an integer number (314760).
21243223 is an apocalyptic number.
1243223 is a deficient number, since it is larger than the sum of its proper divisors (15817).
1243223 is an equidigital number, since it uses as much as digits as its factorization.
1243223 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15816.
The product of its digits is 288, while the sum is 17.
The square root of 1243223 is about 1114.9991031387. Note that the first 3 decimals coincide. The cubic root of 1243223 is about 107.5267069033.
Adding to 1243223 its reverse (3223421), we get a palindrome (4466644).
The spelling of 1243223 in words is "one million, two hundred forty-three thousand, two hundred twenty-three".
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