42216860 has 96 divisors (see below), whose sum is σ = 108864000. Its totient is φ = 13430016.

The previous prime is 42216851. The next prime is 42216869. The reversal of 42216860 is 6861224.

It is an interprime number because it is at equal distance from previous prime (42216851) and next prime (42216869).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42216869) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 156806 + ... + 157074.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^42216860 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 42216860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54432000).

42216860 is an abundant number, since it is smaller than the sum of its proper divisors (66647140).

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

42216860 is a wasteful number, since it uses less digits than its factorization.

42216860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 42216860 is about 6497.4502691440. The cubic root of 42216860 is about 348.1999005635.

The spelling of 42216860 in words is "forty-two million, two hundred sixteen thousand, eight hundred sixty".