125756242 has 8 divisors (see below), whose sum is σ = 199730556. Its totient is φ = 59179392.

The previous prime is 125756237. The next prime is 125756251. The reversal of 125756242 is 242657521.

It can be written as a sum of positive squares in 2 ways, for example, as 94070601 + 31685641 = 9699^2 + 5629^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 3698713 = 125756242 / (1 + 2 + 5 + 7 + 5 + 6 + 2 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 125756198 and 125756207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1849323 + ... + 1849390.

Almost surely, 2^125756242 is an apocalyptic number.

125756242 is a deficient number, since it is larger than the sum of its proper divisors (73974314).

125756242 is a wasteful number, since it uses less digits than its factorization.

125756242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698732.

The product of its digits is 33600, while the sum is 34.

The square root of 125756242 is about 11214.1090595731. The cubic root of 125756242 is about 501.0062960445.

The spelling of 125756242 in words is "one hundred twenty-five million, seven hundred fifty-six thousand, two hundred forty-two".