Pyspark - cast a string to integer with trailing zero return Null

Question

I'm using Pyspark v3 when casting the reference column it gives back null !

+-----------------+
|    reference    |
+-----------------+
|     012345      |
+-----------------+

Is this a correct behavior or it should be a pyspark issue ? How can we manage the trailing 0s in this case ?

df.select(f.col('reference').cast('integer'))
+-----------------+
|    reference    |
+-----------------+
|      null       |
+-----------------+