"We must immediately hold an emergency meeting at the United Nations, and further strengthen pressure against North Korea," Abe told reporters after a 40-minute phone call with Trump.
"Increasing pressure -- Japan and the United States are in complete agreement about this," Abe added, without elaborating on proposed measures.
He added that Trump -- who has been embroiled in an escalating war of words with Pyongyang over its weapons development -- said Washington would stand by its ally Japan.
"We will cooperate among Japan, the US and South Korea. We will also reach out to China, Russia and the international community and apply strong pressure on North Korea to change their policy."
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Last week, Japan said it would impose fresh sanctions on North Korea by freezing the assets of Chinese and Namibian firms doing business with the nuclear-armed state.
The move against a half dozen organisations and a couple of individuals comes days after Washington expanded its own punitive measures against Chinese and Russian firms, as well as people linked to Pyongyang over its weapons development.
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