125051242 has 4 divisors (see below), whose sum is σ = 187576866. Its totient is φ = 62525620.

The previous prime is 125051239. The next prime is 125051249. The reversal of 125051242 is 242150521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 125014761 + 36481 = 11181^2 + 191^2 .

It is not an unprimeable number, because it can be changed into a prime (125051249) by changing a digit.

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 as a sum of consecutive naturals, namely, 31262809 + ... + 31262812.

Almost surely, 2^125051242 is an apocalyptic number.

125051242 is a deficient number, since it is larger than the sum of its proper divisors (62525624).

125051242 is an equidigital number, since it uses as much as digits as its factorization.

125051242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62525623.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 125051242 is about 11182.6312645996. The cubic root of 125051242 is about 500.0683133328.

The spelling of 125051242 in words is "one hundred twenty-five million, fifty-one thousand, two hundred forty-two".