42216804 has 72 divisors (see below), whose sum is σ = 122653440. Its totient is φ = 11993472.

The previous prime is 42216791. The next prime is 42216809. The reversal of 42216804 is 40861224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42216809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58357 + ... + 59075.

It is an arithmetic number, because the mean of its divisors is an integer number (1703520).

Almost surely, 2^42216804 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 42216804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61326720).

42216804 is an abundant number, since it is smaller than the sum of its proper divisors (80436636).

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

42216804 is a wasteful number, since it uses less digits than its factorization.

42216804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 42216804 is about 6497.4459597599. The cubic root of 42216804 is about 348.1997466029.

It can be divided in two parts, 4221 and 6804, that added together give a square (11025 = 105²).

The spelling of 42216804 in words is "forty-two million, two hundred sixteen thousand, eight hundred four".