JavaScript provides several built-in methods to work with numbers effectively.Converting Numbers: toString(), toFixed(digits), toExponential(digits), toPrecision(digits)Parsing and Validating Numbers: parseInt(string, radix), parseFloat(string), Number.isInteger(value), Number.isFinite(value), Number.isNaN(value)Rounding Numbers: Math.round(), Math.ceil(), Math.floor(), Math.trunc()Generating Random Numbers: Math.random()Other Useful Number Methods: Math.abs(), Math.pow(base, exponent), Math.sqrt(), Math.max(), Math.min(), Math.sign()JavaScript provides a wide range of methods to work with numbers, from conversion to complex mathematical operations.By mastering these number methods, you can handle various numerical operations in JavaScript with ease.