42135328 has 12 divisors (see below), whose sum is σ = 82953990. Its totient is φ = 21067648.

The previous prime is 42135319. The next prime is 42135329. The reversal of 42135328 is 82353124.

It can be written as a sum of positive squares in only one way, i.e., 41835024 + 300304 = 6468^2 + 548^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42135296 and 42135305.

It is not an unprimeable number, because it can be changed into a prime (42135329) 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, 658333 + ... + 658396.

Almost surely, 2^42135328 is an apocalyptic number.

It is an amenable number.

42135328 is a deficient number, since it is larger than the sum of its proper divisors (40818662).

42135328 is a wasteful number, since it uses less digits than its factorization.

42135328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316739 (or 1316731 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 42135328 is about 6491.1730835035. The cubic root of 42135328 is about 347.9756005265.

The spelling of 42135328 in words is "forty-two million, one hundred thirty-five thousand, three hundred twenty-eight".