Lockdown Brain Teaser......

We may be locked down but our brains are still functioning.....right? A house wife forgot her ATM pin. Which is four digit number, but luckily she remembered some hints on how to recall the pin. Here are some of the clues:The first digit is half of the 2nd The sum of 2nd and 3rd is 10 The 4th is equal to the 2nd plus 1 The sum of all the digit is 23. *What is the atm pin ????* via IFTTT