143894 has 4 divisors (see below), whose sum is σ = 215844. Its totient is φ = 71946.

The previous prime is 143881. The next prime is 143909. The reversal of 143894 is 498341.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143894.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35972 + ... + 35975.

It is an arithmetic number, because the mean of its divisors is an integer number (53961).

2¹⁴³⁸⁹⁴ is an apocalyptic number.

143894 is a deficient number, since it is larger than the sum of its proper divisors (71950).

143894 is an equidigital number, since it uses as much as digits as its factorization.

143894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71949.

The product of its digits is 3456, while the sum is 29.

The square root of 143894 is about 379.3336262448. Note that the first 3 decimals coincide. The cubic root of 143894 is about 52.4019636814.

The spelling of 143894 in words is "one hundred forty-three thousand, eight hundred ninety-four".