42836173 has 2 divisors, whose sum is σ = 42836174. Its totient is φ = 42836172.

The previous prime is 42836149. The next prime is 42836231. The reversal of 42836173 is 37163824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32512804 + 10323369 = 5702^2 + 3213^2 .

It is a cyclic number.

It is not a de Polignac number, because 42836173 - 2¹⁷ = 42705101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42836113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21418086 + 21418087.

It is an arithmetic number, because the mean of its divisors is an integer number (21418087).

Almost surely, 2^42836173 is an apocalyptic number.

It is an amenable number.

42836173 is a deficient number, since it is larger than the sum of its proper divisors (1).

42836173 is an equidigital number, since it uses as much as digits as its factorization.

42836173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 42836173 is about 6544.9349118230. The cubic root of 42836173 is about 349.8943163910.

Adding to 42836173 its reverse (37163824), we get a palindrome (79999997).

The spelling of 42836173 in words is "forty-two million, eight hundred thirty-six thousand, one hundred seventy-three".