42158178442522 has 8 divisors (see below), whose sum is σ = 63326459862900. Its totient is φ = 21049358488224.

The previous prime is 42158178442489. The next prime is 42158178442543. The reversal of 42158178442522 is 22524487185124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32876473907601 + 9281704534921 = 5733801^2 + 3046589^2 .

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

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, 14865364747 + ... + 14865367582.

Almost surely, 2^{42158178442522} is an apocalyptic number.

42158178442522 is a deficient number, since it is larger than the sum of its proper divisors (21168281420378).

42158178442522 is a wasteful number, since it uses less digits than its factorization.

42158178442522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29730733040.

The product of its digits is 11468800, while the sum is 55.

The spelling of 42158178442522 in words is "forty-two trillion, one hundred fifty-eight billion, one hundred seventy-eight million, four hundred forty-two thousand, five hundred twenty-two".