125143 has 4 divisors (see below), whose sum is σ = 130608. Its totient is φ = 119680.

The previous prime is 125141. The next prime is 125149. The reversal of 125143 is 341521.

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

It is a cyclic number.

It is not a de Polignac number, because 125143 - 2¹ = 125141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125141) 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, 2698 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (32652).

2¹²⁵¹⁴³ is an apocalyptic number.

125143 is a deficient number, since it is larger than the sum of its proper divisors (5465).

125143 is an equidigital number, since it uses as much as digits as its factorization.

125143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464.

The product of its digits is 120, while the sum is 16.

The square root of 125143 is about 353.7555653272. The cubic root of 125143 is about 50.0190594005.

Adding to 125143 its reverse (341521), we get a palindrome (466664).

It can be divided in two parts, 12 and 5143, that multiplied together give a palindrome (61716).

The spelling of 125143 in words is "one hundred twenty-five thousand, one hundred forty-three".