• 146 can be written using four 4's:
146 has 4 divisors (see below), whose sum is σ = 222. Its totient is φ = 72.
The previous prime is 139. The next prime is 149. The reversal of 146 is 641.
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 can be written as a sum of positive squares in only one way, i.e., 121 + 25 = 11^2 + 5^2 .
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.
It is a pernicious number, because its binary representation contains a prime number (3) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35 + ... + 38.
146 is a deficient number, since it is larger than the sum of its proper divisors (76).
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 product of its digits is 24, while the sum is 11.
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.
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