42287232 has 128 divisors (see below), whose sum is σ = 124407360. Its totient is φ = 12644352.

The previous prime is 42287227. The next prime is 42287233. The reversal of 42287232 is 23278224.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 42287232.

It is not an unprimeable number, because it can be changed into a prime (42287233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214558 + ... + 214754.

Almost surely, 2^42287232 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 42287232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62203680).

42287232 is an abundant number, since it is smaller than the sum of its proper divisors (82120128).

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

42287232 is a wasteful number, since it uses less digits than its factorization.

42287232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 258 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 42287232 is about 6502.8633693166. The cubic root of 42287232 is about 348.3932666017.

The spelling of 42287232 in words is "forty-two million, two hundred eighty-seven thousand, two hundred thirty-two".