142

E142 is Green S.

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Where 142 fits

142 connects to 2 worlds: mathematics, related numbers.

It is a synthetic green used where the plant-derived colours will not survive processing, and it is banned in several countries.

Other mathematical patterns

Connection

One green comes from plants and will not hold its colour; the other is synthetic and does.

E142 Green S is a synthetic triarylmethane dye used where chlorophyll-based colours are insufficiently stable. It is prohibited in several jurisdictions.
DocumentedEveryday lifeGeography: European Union and states adopting the E number systemPeriod: 1962–

Is 142 a prime number?

No, 142 is not prime.

What are the factors of 142?

The factors of 142 are 1, 2, 71, 142.

What is 142 in Roman numerals?

142 in Roman numerals is CXLII.

About this page's data

Mathematical facts:computed directly from the number's value — nothing to source or verify externally.

Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.

Last reviewed: 3 August 2026