125665242 has 8 divisors (see below), whose sum is σ = 251330496. Its totient is φ = 41888412.

The previous prime is 125665217. The next prime is 125665249. The reversal of 125665242 is 242566521.

It is a sphenic number, since it is the product of 3 distinct primes.

125665242 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (125665249) 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, 10472098 + ... + 10472109.

It is an arithmetic number, because the mean of its divisors is an integer number (31416312).

Almost surely, 2^125665242 is an apocalyptic number.

125665242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125665242 is a wasteful number, since it uses less digits than its factorization.

125665242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20944212.

The product of its digits is 28800, while the sum is 33.

The square root of 125665242 is about 11210.0509365480. The cubic root of 125665242 is about 500.8854204690.

The spelling of 125665242 in words is "one hundred twenty-five million, six hundred sixty-five thousand, two hundred forty-two".