42705136 has 20 divisors (see below), whose sum is σ = 82867464. Its totient is φ = 21320000.

The previous prime is 42705133. The next prime is 42705161. The reversal of 42705136 is 63150724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42705133) 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, 11511 + ... + 14761.

Almost surely, 2^42705136 is an apocalyptic number.

It is an amenable number.

42705136 is a deficient number, since it is larger than the sum of its proper divisors (40162328).

42705136 is a wasteful number, since it uses less digits than its factorization.

42705136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080 (or 4074 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 42705136 is about 6534.9166788873. The cubic root of 42705136 is about 349.5371732793.

The spelling of 42705136 in words is "forty-two million, seven hundred five thousand, one hundred thirty-six".