125543 has 8 divisors (see below), whose sum is σ = 139536. Its totient is φ = 112000.

The previous prime is 125539. The next prime is 125551. The reversal of 125543 is 345521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125543 - 2² = 125539 is a prime.

It is a super-2 number, since 2×125543² = 31522089698, which contains 22 as substring.

It is a Duffinian number.

125543 is a Rhonda number in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125243) 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 7 ways as a sum of consecutive naturals, for example, 1055 + ... + 1167.

It is an arithmetic number, because the mean of its divisors is an integer number (17442).

2¹²⁵⁵⁴³ is an apocalyptic number.

125543 is a deficient number, since it is larger than the sum of its proper divisors (13993).

125543 is a wasteful number, since it uses less digits than its factorization.

125543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its digits is 600, while the sum is 20.

The square root of 125543 is about 354.3204764052. The cubic root of 125543 is about 50.0722954171.

It can be divided in two parts, 12 and 5543, that added together give a palindrome (5555).

The spelling of 125543 in words is "one hundred twenty-five thousand, five hundred forty-three".