42816044 has 36 divisors (see below), whose sum is σ = 80010000. Its totient is φ = 20043936.

The previous prime is 42816029. The next prime is 42816061. The reversal of 42816044 is 44061824.

It is a junction number, because it is equal to n+sod(n) for n = 42815998 and 42816016.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 215057 + ... + 215255.

It is an arithmetic number, because the mean of its divisors is an integer number (2222500).

Almost surely, 2^42816044 is an apocalyptic number.

It is an amenable number.

42816044 is a deficient number, since it is larger than the sum of its proper divisors (37193956).

42816044 is a wasteful number, since it uses less digits than its factorization.

42816044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 42816044 is about 6543.3969771060. The cubic root of 42816044 is about 349.8395019225.

Adding to 42816044 its reverse (44061824), we get a palindrome (86877868).

The spelling of 42816044 in words is "forty-two million, eight hundred sixteen thousand, forty-four".