125728349 has 8 divisors (see below), whose sum is σ = 129116160. Its totient is φ = 122378256.

The previous prime is 125728333. The next prime is 125728357. The reversal of 125728349 is 943827521.

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 125728349 - 2⁴ = 125728333 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 (125728319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2609 + ... + 16070.

It is an arithmetic number, because the mean of its divisors is an integer number (16139520).

Almost surely, 2^125728349 is an apocalyptic number.

It is an amenable number.

125728349 is a deficient number, since it is larger than the sum of its proper divisors (3387811).

125728349 is a wasteful number, since it uses less digits than its factorization.

125728349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18859.

The product of its digits is 120960, while the sum is 41.

The square root of 125728349 is about 11212.8653340705. The cubic root of 125728349 is about 500.9692518875.

The spelling of 125728349 in words is "one hundred twenty-five million, seven hundred twenty-eight thousand, three hundred forty-nine".