#include <cstdio>
typedef long long ll;
const ll MOD = 1000000007, LINE = 1000000000;
using namespace std;

ll dfs(ll i);

int main()
{
    ll n, ans;
    scanf("%lld", &n);
    
    ans = dfs(n);
    
    printf("%lld\n", ans);
    
    return 0;
}

ll dfs(ll i) {
    if (i == 0) return 1;
    ll n = dfs(i - 1);
    i %= MOD;
    if (i > LINE && n > LINE) {
        return ((LINE * LINE) % MOD + (i - LINE) * LINE + (n - LINE) * LINE + (i - LINE) * (n - LINE)) % MOD;
    } else if (i > LINE && n <= LINE) {
        return ((LINE * n) % MOD + (i - LINE) * n) % MOD;
    } else if (i <= LINE && n > LINE) {
        return ((LINE * i) % MOD + (n - LINE) * i) % MOD;
    } else {
        return (i * n) % MOD;
    }
}