42810938 has 16 divisors (see below), whose sum is σ = 66822144. Its totient is φ = 20548080.

The previous prime is 42810919. The next prime is 42810967. The reversal of 42810938 is 83901824.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 42810898 and 42810907.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5156 + ... + 10592.

It is an arithmetic number, because the mean of its divisors is an integer number (4176384).

Almost surely, 2^42810938 is an apocalyptic number.

42810938 is a deficient number, since it is larger than the sum of its proper divisors (24011206).

42810938 is a wasteful number, since it uses less digits than its factorization.

42810938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 42810938 is about 6543.0068011580. The cubic root of 42810938 is about 349.8255947408.

The spelling of 42810938 in words is "forty-two million, eight hundred ten thousand, nine hundred thirty-eight".