42134111978 has 8 divisors (see below), whose sum is σ = 72229906272. Its totient is φ = 18057476556.

The previous prime is 42134111959. The next prime is 42134112011. The reversal of 42134111978 is 87911143124.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504789700 + ... + 1504789727.

It is an arithmetic number, because the mean of its divisors is an integer number (9028738284).

Almost surely, 2^42134111978 is an apocalyptic number.

42134111978 is a deficient number, since it is larger than the sum of its proper divisors (30095794294).

42134111978 is a wasteful number, since it uses less digits than its factorization.

42134111978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009579436.

The product of its digits is 48384, while the sum is 41.

The spelling of 42134111978 in words is "forty-two billion, one hundred thirty-four million, one hundred eleven thousand, nine hundred seventy-eight".