125436143 has 4 divisors (see below), whose sum is σ = 143355600. Its totient is φ = 107516688.

The previous prime is 125436139. The next prime is 125436163. The reversal of 125436143 is 341634521.

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 125436143 - 2² = 125436139 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125436133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8959718 + ... + 8959731.

It is an arithmetic number, because the mean of its divisors is an integer number (35838900).

Almost surely, 2^125436143 is an apocalyptic number.

125436143 is a deficient number, since it is larger than the sum of its proper divisors (17919457).

125436143 is an equidigital number, since it uses as much as digits as its factorization.

125436143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17919456.

The product of its digits is 8640, while the sum is 29.

The square root of 125436143 is about 11199.8278111764. The cubic root of 125436143 is about 500.5808489677.

The spelling of 125436143 in words is "one hundred twenty-five million, four hundred thirty-six thousand, one hundred forty-three".