146

146 is a natural number that follows 145 and precedes 147. In mathematics, it is an even composite number with prime factorization 2 × 73. Its positive divisors are 1, 2, 73, and 146. As a product of two distinct primes, it is a semiprime. The sum of its proper divisors is 76, which is less than 146, so it is a deficient number.

In different numeral systems, 146 is written as 146 in decimal, 10010010 in binary, 222 in octal, and 0x92 in hexadecimal. In Roman numerals it is CXLVI. In written English, it is typically expressed as “one hundred forty-six” (British usage commonly adds “and”: “one hundred and forty-six”).

The number 146 also appears as a label in various calendars, catalogs, and coding schemes and may designate a year in the Anno Domini era (146 CE) or the Before Common Era (146 BCE). Beyond its basic arithmetic properties, 146 has no widely recognized mathematical theorems or constants uniquely associated with it, but it is part of standard number-theoretic and numeral-system patterns like any other positive integer.