toBigDecimalOrNull

Parses the string as a java.math.BigDecimal number and returns the result or null if the string is not a valid representation of a number.

fun String.toBigDecimalOrNull(): BigDecimal?(source)

import java.math.BigDecimal

fun main() {
    // Valid number string
    val valid = "1234.56".toBigDecimalOrNull()
    println(valid)           // Output: 1234.56

    // Invalid number string
    val invalid = "abc".toBigDecimalOrNull()
    println(invalid)         // Output: null

    // Safe usage with let
    "42".toBigDecimalOrNull()?.let { number ->
        println("Parsed BigDecimal: $number")
    }
}

Source