125843 has 4 divisors (see below), whose sum is σ = 127968. Its totient is φ = 123720.

The previous prime is 125821. The next prime is 125863. The reversal of 125843 is 348521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348521 = 97 ⋅3593.

It is a cyclic number.

It is not a de Polignac number, because 125843 - 2¹⁰ = 124819 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 125843.

It is not an unprimeable number, because it can be changed into a prime (125803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971 + ... + 1092.

It is an arithmetic number, because the mean of its divisors is an integer number (31992).

2¹²⁵⁸⁴³ is an apocalyptic number.

125843 is a deficient number, since it is larger than the sum of its proper divisors (2125).

125843 is an equidigital number, since it uses as much as digits as its factorization.

125843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124.

The product of its digits is 960, while the sum is 23.

The square root of 125843 is about 354.7435693568. The cubic root of 125843 is about 50.1121482673.

The spelling of 125843 in words is "one hundred twenty-five thousand, eight hundred forty-three".