even, composite · 420th positive integer
The number 420
420 is an even composite number. It is the 420th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 3 × 5 × 7 |
| Divisors | 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420 |
| Binary | 110100100 |
| Hexadecimal | 0x1A4 |
| Roman numeral | CDXX |
| Digit sum | 6 |
| Properties | even, composite |
Reading 420 in NumGrid context
For 420, the underlying data on this page comes from classical number theory plus NumGrid solver-derived puzzle statistics. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for 420’s peers within positive integers within the NumGrid target pool. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Frequently asked
Is 420 a prime number?
No. 420 is composite. Its prime factorization is 2 × 2 × 3 × 5 × 7.
What are the factors of 420?
The factors (divisors) of 420 are 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420.
What is 420 in binary?
420 in binary is 110100100. In hexadecimal it's 1A4.
What is 420 as a Roman numeral?
420 in Roman numerals is CDXX.
What's the digit sum of 420?
Adding the digits of 420: 4 + 2 + 0 = 6.