42156134634 has 8 divisors (see below), whose sum is σ = 84312269280. Its totient is φ = 14052044876.

The previous prime is 42156134627. The next prime is 42156134639. The reversal of 42156134634 is 43643165124.

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

42156134634 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42156134592 and 42156134601.

It is not an unprimeable number, because it can be changed into a prime (42156134639) by changing a digit.

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, 3513011214 + ... + 3513011225.

It is an arithmetic number, because the mean of its divisors is an integer number (10539033660).

Almost surely, 2^42156134634 is an apocalyptic number.

42156134634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42156134634 is a wasteful number, since it uses less digits than its factorization.

42156134634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7026022444.

The product of its digits is 207360, while the sum is 39.

Adding to 42156134634 its reverse (43643165124), we get a palindrome (85799299758).

The spelling of 42156134634 in words is "forty-two billion, one hundred fifty-six million, one hundred thirty-four thousand, six hundred thirty-four".