143873 has 2 divisors, whose sum is σ = 143874. Its totient is φ = 143872.

The previous prime is 143833. The next prime is 143879. The reversal of 143873 is 378341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82369 + 61504 = 287^2 + 248^2 .

It is a cyclic number.

It is not a de Polignac number, because 143873 - 2⁸ = 143617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (143879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71936 + 71937.

It is an arithmetic number, because the mean of its divisors is an integer number (71937).

It is a Proth number, since it is equal to 281 ⋅ 2⁹ + 1 and 281 < 2⁹.

2¹⁴³⁸⁷³ is an apocalyptic number.

It is an amenable number.

143873 is a deficient number, since it is larger than the sum of its proper divisors (1).

143873 is an equidigital number, since it uses as much as digits as its factorization.

143873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 143873 is about 379.3059451155. The cubic root of 143873 is about 52.3994143632.

The spelling of 143873 in words is "one hundred forty-three thousand, eight hundred seventy-three".