42836845 has 8 divisors (see below), whose sum is σ = 51521400. Its totient is φ = 34191360.

The previous prime is 42836837. The next prime is 42836851. The reversal of 42836845 is 54863824.

It can be written as a sum of positive squares in 4 ways, for example, as 1633284 + 41203561 = 1278^2 + 6419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42836845 - 2³ = 42836837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42836798 and 42836807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7296 + ... + 11785.

It is an arithmetic number, because the mean of its divisors is an integer number (6440175).

Almost surely, 2^42836845 is an apocalyptic number.

It is an amenable number.

42836845 is a deficient number, since it is larger than the sum of its proper divisors (8684555).

42836845 is a wasteful number, since it uses less digits than its factorization.

42836845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19535.

The product of its digits is 184320, while the sum is 40.

The square root of 42836845 is about 6544.9862490306. The cubic root of 42836845 is about 349.8961460577.

It can be divided in two parts, 42836 and 845, that added together give a square (43681 = 209²).

The spelling of 42836845 in words is "forty-two million, eight hundred thirty-six thousand, eight hundred forty-five".