42836 has 6 divisors (see below), whose sum is σ = 74970. Its totient is φ = 21416.

The previous prime is 42829. The next prime is 42839. The reversal of 42836 is 63824.

It is a happy number.

42836 is nontrivially palindromic in base 13.

42836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 42436 + 400 = 206^2 + 20^2 .

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42839) by changing a digit.

42836 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5351 + ... + 5358.

It is an arithmetic number, because the mean of its divisors is an integer number (12495).

2⁴²⁸³⁶ is an apocalyptic number.

It is an amenable number.

42836 is a deficient number, since it is larger than the sum of its proper divisors (32134).

42836 is a wasteful number, since it uses less digits than its factorization.

42836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10713 (or 10711 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 42836 is about 206.9685966518. The cubic root of 42836 is about 34.9893845358.

It can be divided in two parts, 428 and 36, that added together give a palindrome (464).

The spelling of 42836 in words is "forty-two thousand, eight hundred thirty-six".