125865842 has 16 divisors (see below), whose sum is σ = 200790240. Its totient is φ = 59004288.

The previous prime is 125865833. The next prime is 125865853. The reversal of 125865842 is 248568521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 125865842.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13388 + ... + 20759.

It is an arithmetic number, because the mean of its divisors is an integer number (12549390).

Almost surely, 2^125865842 is an apocalyptic number.

125865842 is a deficient number, since it is larger than the sum of its proper divisors (74924398).

125865842 is a wasteful number, since it uses less digits than its factorization.

125865842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34265.

The product of its digits is 153600, while the sum is 41.

The square root of 125865842 is about 11218.9946964958. The cubic root of 125865842 is about 501.1518006730.

The spelling of 125865842 in words is "one hundred twenty-five million, eight hundred sixty-five thousand, eight hundred forty-two".