42105656 has 16 divisors (see below), whose sum is σ = 79031400. Its totient is φ = 21030624.

The previous prime is 42105649. The next prime is 42105689. The reversal of 42105656 is 65650124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7535 + ... + 11873.

Almost surely, 2^42105656 is an apocalyptic number.

It is an amenable number.

42105656 is a deficient number, since it is larger than the sum of its proper divisors (36925744).

42105656 is a wasteful number, since it uses less digits than its factorization.

42105656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558 (or 5554 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 42105656 is about 6488.8871156771. The cubic root of 42105656 is about 347.8938990412.

The spelling of 42105656 in words is "forty-two million, one hundred five thousand, six hundred fifty-six".