42164838 has 24 divisors (see below), whose sum is σ = 96166200. Its totient is φ = 13315104.

The previous prime is 42164821. The next prime is 42164849. The reversal of 42164838 is 83846124.

42164838 is a `hidden beast` number, since 4 + 2 + 1 + 648 + 3 + 8 = 666.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 61303 + ... + 61986.

It is an arithmetic number, because the mean of its divisors is an integer number (4006925).

Almost surely, 2^42164838 is an apocalyptic number.

42164838 is an abundant number, since it is smaller than the sum of its proper divisors (54001362).

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

42164838 is a wasteful number, since it uses less digits than its factorization.

42164838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123316 (or 123313 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 42164838 is about 6493.4457724693. The cubic root of 42164838 is about 348.0568179127.

The spelling of 42164838 in words is "forty-two million, one hundred sixty-four thousand, eight hundred thirty-eight".