In a six-digit number, the digit of thousands place is 4. The digit at ten's place is double that of digit at thousand's place and digit at hundreds places is half of the digit at thousand’s place. The digit at unit's place is half of the digit at hundred's place. Digit at Ten thousand's place is sum of the digits at thousands and hundreds place and digit at lakh's place is half the digit at ten thousands place. What will be the number?