125243242 has 4 divisors (see below), whose sum is σ = 187864866. Its totient is φ = 62621620.

The previous prime is 125243201. The next prime is 125243243. The reversal of 125243242 is 242342521.

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., 125238481 + 4761 = 11191^2 + 69^2 .

It is not an unprimeable number, because it can be changed into a prime (125243243) by changing a digit.

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 as a sum of consecutive naturals, namely, 31310809 + ... + 31310812.

Almost surely, 2^125243242 is an apocalyptic number.

125243242 is a deficient number, since it is larger than the sum of its proper divisors (62621624).

125243242 is an equidigital number, since it uses as much as digits as its factorization.

125243242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62621623.

The product of its digits is 3840, while the sum is 25.

The square root of 125243242 is about 11191.2127135534. The cubic root of 125243242 is about 500.3241125234.

Adding to 125243242 its reverse (242342521), we get a palindrome (367585763).

The spelling of 125243242 in words is "one hundred twenty-five million, two hundred forty-three thousand, two hundred forty-two".