42381232 has 10 divisors (see below), whose sum is σ = 82113668. Its totient is φ = 21190608.

The previous prime is 42381223. The next prime is 42381233. The reversal of 42381232 is 23218324.

42381232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42381197 and 42381206.

It is not an unprimeable number, because it can be changed into a prime (42381233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324398 + ... + 1324429.

Almost surely, 2^42381232 is an apocalyptic number.

It is an amenable number.

42381232 is a deficient number, since it is larger than the sum of its proper divisors (39732436).

42381232 is a wasteful number, since it uses less digits than its factorization.

42381232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648835 (or 2648829 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 42381232 is about 6510.0869425838. The cubic root of 42381232 is about 348.6512225663.

Adding to 42381232 its reverse (23218324), we get a palindrome (65599556).

The spelling of 42381232 in words is "forty-two million, three hundred eighty-one thousand, two hundred thirty-two".