42216552 has 160 divisors (see below), whose sum is σ = 139043520. Its totient is φ = 11715840.

The previous prime is 42216541. The next prime is 42216589. The reversal of 42216552 is 25561224.

42216552 is a `hidden beast` number, since 4 + 2 + 2 + 1 + 655 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 185863 + ... + 186089.

It is an arithmetic number, because the mean of its divisors is an integer number (869022).

Almost surely, 2^42216552 is an apocalyptic number.

42216552 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42216552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69521760).

42216552 is an abundant number, since it is smaller than the sum of its proper divisors (96826968).

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

42216552 is a wasteful number, since it uses less digits than its factorization.

42216552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 280 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 42216552 is about 6497.4265674958. The cubic root of 42216552 is about 348.1990537784.

Adding to 42216552 its reverse (25561224), we get a palindrome (67777776).

The spelling of 42216552 in words is "forty-two million, two hundred sixteen thousand, five hundred fifty-two".