42838135 has 4 divisors (see below), whose sum is σ = 51405768. Its totient is φ = 34270504.

The previous prime is 42838129. The next prime is 42838163. The reversal of 42838135 is 53183824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42838135 - 2⁹ = 42837623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42838135.

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, 4283809 + ... + 4283818.

It is an arithmetic number, because the mean of its divisors is an integer number (12851442).

Almost surely, 2^42838135 is an apocalyptic number.

42838135 is a deficient number, since it is larger than the sum of its proper divisors (8567633).

42838135 is an equidigital number, since it uses as much as digits as its factorization.

42838135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8567632.

The product of its digits is 23040, while the sum is 34.

The square root of 42838135 is about 6545.0847970061. The cubic root of 42838135 is about 349.8996583106.

The spelling of 42838135 in words is "forty-two million, eight hundred thirty-eight thousand, one hundred thirty-five".