42109216 has 24 divisors (see below), whose sum is σ = 83507760. Its totient is φ = 20900928.

The previous prime is 42109211. The next prime is 42109229. The reversal of 42109216 is 61290124.

It is not an unprimeable number, because it can be changed into a prime (42109211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286 + ... + 9181.

It is an arithmetic number, because the mean of its divisors is an integer number (3479490).

Almost surely, 2^42109216 is an apocalyptic number.

It is an amenable number.

42109216 is a deficient number, since it is larger than the sum of its proper divisors (41398544).

42109216 is a wasteful number, since it uses less digits than its factorization.

42109216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9616 (or 9608 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 42109216 is about 6489.1614250225. The cubic root of 42109216 is about 347.9037034831.

The spelling of 42109216 in words is "forty-two million, one hundred nine thousand, two hundred sixteen".