125191242 has 48 divisors (see below), whose sum is σ = 300354912. Its totient is φ = 37366560.

The previous prime is 125191229. The next prime is 125191267. The reversal of 125191242 is 242191521.

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 23 ways as a sum of consecutive naturals, for example, 8548 + ... + 17984.

It is an arithmetic number, because the mean of its divisors is an integer number (6257394).

Almost surely, 2^125191242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125191242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150177456).

125191242 is an abundant number, since it is smaller than the sum of its proper divisors (175163670).

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

125191242 is a wasteful number, since it uses less digits than its factorization.

125191242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9523 (or 9520 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 125191242 is about 11188.8892210085. The cubic root of 125191242 is about 500.2548594046.

The spelling of 125191242 in words is "one hundred twenty-five million, one hundred ninety-one thousand, two hundred forty-two".