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146 is the 6th octahedral number, where 6 is the 2nd octahedral number. So it is equal to O1(2) in the fast iteration hierarchy.

The sum of its digits is the prime 11.

146 in base 8 is a repdigit (2228).

Its prime factorization is 2 × 73, so it is an even composite number and a semiprime number.

In radioengineering

In some countries, such as Germany, the 2-meter amateur band ends at 146 MHz.

In science

There are exactly 146 primordial nuclides without energetically allowed alpha or beta (including double beta and electron capture) decay modes.

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