125122042442 has 8 divisors (see below), whose sum is σ = 188488571076. Its totient is φ = 62292518752.

The previous prime is 125122042439. The next prime is 125122042477. The reversal of 125122042442 is 244240221521.

It can be written as a sum of positive squares in 2 ways, for example, as 118149625441 + 6972417001 = 343729^2 + 83501^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134250653 + ... + 134251584.

Almost surely, 2^125122042442 is an apocalyptic number.

125122042442 is a deficient number, since it is larger than the sum of its proper divisors (63366528634).

125122042442 is a wasteful number, since it uses less digits than its factorization.

125122042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268502472.

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 125122042442 its reverse (244240221521), we get a palindrome (369362263963).

The spelling of 125122042442 in words is "one hundred twenty-five billion, one hundred twenty-two million, forty-two thousand, four hundred forty-two".