42709328 has 20 divisors (see below), whose sum is σ = 82890528. Its totient is φ = 21318240.

The previous prime is 42709327. The next prime is 42709343. The reversal of 42709328 is 82390724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42709327) 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 in 3 ways as a sum of consecutive naturals, for example, 9125 + ... + 12987.

Almost surely, 2^42709328 is an apocalyptic number.

It is an amenable number.

42709328 is a deficient number, since it is larger than the sum of its proper divisors (40181200).

42709328 is a wasteful number, since it uses less digits than its factorization.

42709328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562 (or 4556 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 42709328 is about 6535.2374096126. The cubic root of 42709328 is about 349.5486099356.

The spelling of 42709328 in words is "forty-two million, seven hundred nine thousand, three hundred twenty-eight".