143966 has 4 divisors (see below), whose sum is σ = 215952. Its totient is φ = 71982.

The previous prime is 143953. The next prime is 143971. The reversal of 143966 is 669341.

143966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 669341 = 17 ⋅39373.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

143966 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35990 + ... + 35993.

It is an arithmetic number, because the mean of its divisors is an integer number (53988).

2¹⁴³⁹⁶⁶ is an apocalyptic number.

143966 is a deficient number, since it is larger than the sum of its proper divisors (71986).

143966 is an equidigital number, since it uses as much as digits as its factorization.

143966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71985.

The product of its digits is 3888, while the sum is 29.

The square root of 143966 is about 379.4285176420. The cubic root of 143966 is about 52.4107023184.

The spelling of 143966 in words is "one hundred forty-three thousand, nine hundred sixty-six".