125342543 has 4 divisors (see below), whose sum is σ = 125435208. Its totient is φ = 125249880.

The previous prime is 125342537. The next prime is 125342557. The reversal of 125342543 is 345243521.

It is a happy number.

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 125342543 - 2¹⁶ = 125277007 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 (125342573) 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, 44273 + ... + 47018.

It is an arithmetic number, because the mean of its divisors is an integer number (31358802).

Almost surely, 2^125342543 is an apocalyptic number.

125342543 is a deficient number, since it is larger than the sum of its proper divisors (92665).

125342543 is an equidigital number, since it uses as much as digits as its factorization.

125342543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92664.

The product of its digits is 14400, while the sum is 29.

The square root of 125342543 is about 11195.6483956937. The cubic root of 125342543 is about 500.4563074404.

The spelling of 125342543 in words is "one hundred twenty-five million, three hundred forty-two thousand, five hundred forty-three".