• 146 can be written using four 4's:
146 is nontrivially palindromic in base 8.
146 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.
It is a semiprime because it is the product of two primes.
It is a Curzon number.
146 is a nontrivial repdigit in base 8.
It is a plaindrome in base 7, base 8, base 10, base 11 and base 15.
It is a nialpdrome in base 8, base 13, base 14 and base 16.
It is a zygodrome in base 8.
146 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
146 is an equidigital number, since it uses as much as digits as its factorization.
146 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 75.
The square root of 146 is about 12.0830459736. The cubic root of 146 is about 5.2656374282.
Adding to 146 its reverse (641), we get a palindrome (787).
The spelling of 146 in words is "one hundred forty-six", and thus it is an aban number.