42605838 has 40 divisors (see below), whose sum is σ = 104151960. Its totient is φ = 12910320.

The previous prime is 42605837. The next prime is 42605851. The reversal of 42605838 is 83850624.

42605838 is a `hidden beast` number, since 42 + 605 + 8 + 3 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42605837) 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 19 ways as a sum of consecutive naturals, for example, 10173 + ... + 13736.

It is an arithmetic number, because the mean of its divisors is an integer number (2603799).

Almost surely, 2^42605838 is an apocalyptic number.

42605838 is an abundant number, since it is smaller than the sum of its proper divisors (61546122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42605838 is a wasteful number, since it uses less digits than its factorization.

42605838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23934 (or 23925 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 42605838 is about 6527.3147618297. The cubic root of 42605838 is about 349.2660483704.

The spelling of 42605838 in words is "forty-two million, six hundred five thousand, eight hundred thirty-eight".