42505232 has 40 divisors (see below), whose sum is σ = 102677952. Its totient is φ = 16560000.

The previous prime is 42505231. The next prime is 42505277. The reversal of 42505232 is 23250524.

It is a junction number, because it is equal to n+sod(n) for n = 42505198 and 42505207.

It is not an unprimeable number, because it can be changed into a prime (42505231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16019 + ... + 18482.

Almost surely, 2^42505232 is an apocalyptic number.

It is an amenable number.

42505232 is an abundant number, since it is smaller than the sum of its proper divisors (60172720).

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

42505232 is a wasteful number, since it uses less digits than its factorization.

42505232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34527 (or 34521 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 42505232 is about 6519.6036689357. The cubic root of 42505232 is about 348.9909221154.

Adding to 42505232 its reverse (23250524), we get a palindrome (65755756).

The spelling of 42505232 in words is "forty-two million, five hundred five thousand, two hundred thirty-two".