42816534 has 8 divisors (see below), whose sum is σ = 85633080. Its totient is φ = 14272176.

The previous prime is 42816517. The next prime is 42816539. The reversal of 42816534 is 43561824.

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

42816534 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42816495 and 42816504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42816539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3568039 + ... + 3568050.

It is an arithmetic number, because the mean of its divisors is an integer number (10704135).

Almost surely, 2^42816534 is an apocalyptic number.

42816534 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.

42816534 is a wasteful number, since it uses less digits than its factorization.

42816534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7136094.

The product of its digits is 23040, while the sum is 33.

The square root of 42816534 is about 6543.4344193245. The cubic root of 42816534 is about 349.8408364744.

The spelling of 42816534 in words is "forty-two million, eight hundred sixteen thousand, five hundred thirty-four".