42827838 has 32 divisors (see below), whose sum is σ = 89523360. Its totient is φ = 13641600.

The previous prime is 42827831. The next prime is 42827891. The reversal of 42827838 is 83872824.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42827838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42827831) 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 15 ways as a sum of consecutive naturals, for example, 16356 + ... + 18792.

It is an arithmetic number, because the mean of its divisors is an integer number (2797605).

Almost surely, 2^42827838 is an apocalyptic number.

42827838 is an abundant number, since it is smaller than the sum of its proper divisors (46695522).

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

42827838 is a wasteful number, since it uses less digits than its factorization.

42827838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572.

The product of its digits is 172032, while the sum is 42.

The square root of 42827838 is about 6544.2981289058. The cubic root of 42827838 is about 349.8716209439.

The spelling of 42827838 in words is "forty-two million, eight hundred twenty-seven thousand, eight hundred thirty-eight".