42552228 has 12 divisors (see below), whose sum is σ = 99288560. Its totient is φ = 14184072.

The previous prime is 42552221. The next prime is 42552233. The reversal of 42552228 is 82225524.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 42552195 and 42552204.

It is not an unprimeable number, because it can be changed into a prime (42552221) 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 3 ways as a sum of consecutive naturals, for example, 1772998 + ... + 1773021.

Almost surely, 2^42552228 is an apocalyptic number.

It is an amenable number.

42552228 is an abundant number, since it is smaller than the sum of its proper divisors (56736332).

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

42552228 is a wasteful number, since it uses less digits than its factorization.

42552228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546026 (or 3546024 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

The square root of 42552228 is about 6523.2068800552. The cubic root of 42552228 is about 349.1194955925.

The spelling of 42552228 in words is "forty-two million, five hundred fifty-two thousand, two hundred twenty-eight".