42705556 has 12 divisors (see below), whose sum is σ = 75090400. Its totient is φ = 21251160.

The previous prime is 42705541. The next prime is 42705571. The reversal of 42705556 is 65550724.

It is an interprime number because it is at equal distance from previous prime (42705541) and next prime (42705571).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 24456 + ... + 26143.

Almost surely, 2^42705556 is an apocalyptic number.

It is an amenable number.

42705556 is a deficient number, since it is larger than the sum of its proper divisors (32384844).

42705556 is a wasteful number, since it uses less digits than its factorization.

42705556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50814 (or 50812 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 42705556 is about 6534.9488138776. The cubic root of 42705556 is about 349.5383191612.

The spelling of 42705556 in words is "forty-two million, seven hundred five thousand, five hundred fifty-six".