42208112 has 40 divisors (see below), whose sum is σ = 86423040. Its totient is φ = 19938240.

The previous prime is 42208097. The next prime is 42208121. The reversal of 42208112 is 21180224.

It is a happy number.

It is a congruent number.

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, 20339 + ... + 22317.

It is an arithmetic number, because the mean of its divisors is an integer number (2160576).

Almost surely, 2^42208112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42208112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43211520).

42208112 is an abundant number, since it is smaller than the sum of its proper divisors (44214928).

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

42208112 is a wasteful number, since it uses less digits than its factorization.

42208112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061 (or 2055 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 42208112 is about 6496.7770471211. Note that the first 3 decimals coincide. The cubic root of 42208112 is about 348.1758480629.

Adding to 42208112 its reverse (21180224), we get a palindrome (63388336).

The spelling of 42208112 in words is "forty-two million, two hundred eight thousand, one hundred twelve".