126877981742 has 8 divisors (see below), whose sum is σ = 190320807600. Its totient is φ = 63437712544.

The previous prime is 126877981733. The next prime is 126877981877. The reversal of 126877981742 is 247189778621.

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

It is a congruent number.

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, 509867 + ... + 716742.

It is an arithmetic number, because the mean of its divisors is an integer number (23790100950).

Almost surely, 2^126877981742 is an apocalyptic number.

126877981742 is a deficient number, since it is larger than the sum of its proper divisors (63442825858).

126877981742 is a wasteful number, since it uses less digits than its factorization.

126877981742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278330.

The product of its digits is 18966528, while the sum is 62.

The spelling of 126877981742 in words is "one hundred twenty-six billion, eight hundred seventy-seven million, nine hundred eighty-one thousand, seven hundred forty-two".