select (1231151827/60)
select 20519197/60
select 341986/24
select dateadd(dd,14249,'19700101')

select convert(datetime,40010/*your int value*/,112/*your format*/)

declare @time1 datetime
set @time1 = getdate()
select convert(int,@time1)
print @time1

declare @time int
set @time = 40042
select convert(datetime,@time,112)
print @time

select dateadd(dd,14249,'19700101') --add the offset for the stored date
--2009-01-05 00:00:00.000
select (1231151827 % 60) --sec to min gain 7 seconds from
select 20519197 % 60 --min to hour gain 37 minutes
select 341986 % 24 --hour to days   gain 10 hours

select dateadd(second,1231151827,'19700101')
--2009-01-05 10:37:07.000