That is the correct spelling (forty thousand) for the numeral 40000 or 40,000.
five thousand and forty one
Forty-five thousand.
Two hundred and forty thousand.
forty three thousand
Three thousand and forty.
One hundred forty thousand
Forty-eight thousand, two
In words . . . . . "forty thousand". In numbers . . . 40,000 .
five thousand and forty one
Forty-five thousand.
Forty-nine thousand
thirty thousand, forty.
40,000.00 = forty thousand.
forty-seven thousand.
ninety thousand forty six
forty three thousand
Three thousand and forty.