Declension table of ?sahasraputra

Masculine	Singular	Dual	Plural
Nominative	sahasraputraḥ	sahasraputrau	sahasraputrāḥ
Vocative	sahasraputra	sahasraputrau	sahasraputrāḥ
Accusative	sahasraputram	sahasraputrau	sahasraputrān
Instrumental	sahasraputreṇa	sahasraputrābhyām	sahasraputraiḥ sahasraputrebhiḥ
Dative	sahasraputrāya	sahasraputrābhyām	sahasraputrebhyaḥ
Ablative	sahasraputrāt	sahasraputrābhyām	sahasraputrebhyaḥ
Genitive	sahasraputrasya	sahasraputrayoḥ	sahasraputrāṇām
Locative	sahasraputre	sahasraputrayoḥ	sahasraputreṣu

Compound sahasraputra -

Adverb -sahasraputram -sahasraputrāt