43836642 has 24 divisors (see below), whose sum is σ = 100567116. Its totient is φ = 13752576.

The previous prime is 43836641. The next prime is 43836649. The reversal of 43836642 is 24663834.

It is a happy number.

43836642 is a `hidden beast` number, since 4 + 3 + 8 + 3 + 6 + 642 = 666.

43836642 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 2 ways, for example, as 41873841 + 1962801 = 6471^2 + 1401^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43836597 and 43836606.

It is not an unprimeable number, because it can be changed into a prime (43836641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71323 + ... + 71934.

Almost surely, 2^43836642 is an apocalyptic number.

43836642 is an abundant number, since it is smaller than the sum of its proper divisors (56730474).

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

43836642 is a wasteful number, since it uses less digits than its factorization.

43836642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143282 (or 143279 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 43836642 is about 6620.9245577940. The cubic root of 43836642 is about 352.5973897194.

It can be divided in two parts, 4383 and 6642, that added together give a square (11025 = 105²).

The spelling of 43836642 in words is "forty-three million, eight hundred thirty-six thousand, six hundred forty-two".