42507232 has 12 divisors (see below), whose sum is σ = 83686176. Its totient is φ = 21253600.

The previous prime is 42507211. The next prime is 42507233. The reversal of 42507232 is 23270524.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42507197 and 42507206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42507233) 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 as a sum of consecutive naturals, namely, 664144 + ... + 664207.

It is an arithmetic number, because the mean of its divisors is an integer number (6973848).

Almost surely, 2^42507232 is an apocalyptic number.

It is an amenable number.

42507232 is a deficient number, since it is larger than the sum of its proper divisors (41178944).

42507232 is a wasteful number, since it uses less digits than its factorization.

42507232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328361 (or 1328353 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 42507232 is about 6519.7570506883. The cubic root of 42507232 is about 348.9963957231.

Adding to 42507232 its reverse (23270524), we get a palindrome (65777756).

It can be divided in two parts, 425072 and 32, that added together give a square (425104 = 652²).

The spelling of 42507232 in words is "forty-two million, five hundred seven thousand, two hundred thirty-two".