Code point
U+1D7D2
Glyph appearance depends on your fonts.
U+1D7D2
Nd<font> 0034U+1D7D2 MATHEMATICAL BOLD DIGIT FOUR is a Unicode 16.0.0 character in the Decimal Digit Number category. It belongs to the Mathematical Alphanumeric Symbols block.
Choose the representation you need, then copy its value.
U+1D7D2
120786
𝟒
𝟒
F0 9D 9F 92
D835 DFD2
0001D7D2
%F0%9D%9F%92
\U0001D7D2
\u{1D7D2}
\uD835\uDFD2
\1D7D2