42125066978 has 16 divisors (see below), whose sum is σ = 64969422840. Its totient is φ = 20472412800.

The previous prime is 42125066959. The next prime is 42125067001. The reversal of 42125066978 is 87966052124.

42125066978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 28292249209 + 13832817769 = 168203^2 + 117613^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932813 + ... + 976928.

Almost surely, 2^42125066978 is an apocalyptic number.

42125066978 is a deficient number, since it is larger than the sum of its proper divisors (22844355862).

42125066978 is a wasteful number, since it uses less digits than its factorization.

42125066978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910053.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 42125066978 in words is "forty-two billion, one hundred twenty-five million, sixty-six thousand, nine hundred seventy-eight".