The number 420

Representation numerals

Greek numeral

υκ

Arabic numeral

٤٢٠

Roman numeral

CDXX

Maya numeral



Chinese numeral

四百二十

Hebrew numeral

תכ
Numeral systems
Binary: 110100100
Septimal (base 7): 1140
Octal: 644
Hexadecimal: 1a4
Base 24: HC
Factorization
420 = 2 × 2 × 3 × 5 × 7
420 has 24 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
Sum of all divisors other than 420: 924
Sums & differences
Difference of 2 squares: 420 = 222 - 82 = 262 - 162 = 382 - 322 = 1062 - 1042
Goldbach conjecture: 420 = 409 + 11 = 401 + 19 = 397 + 23 = 389 + 31 = 383 + 37 = 379 + 41 = 373 + 47 = 367 + 53 = 359 + 61 = 353 + 67 = . . . (only the first 10 pairs are shown)
Characteristics
Related primes
The 420th prime number is: 2903
Previous prime number: 419 — Next prime number: 421
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