43612 has 6 divisors (see below), whose sum is σ = 76328. Its totient is φ = 21804.

The previous prime is 43609. The next prime is 43613. The reversal of 43612 is 21634.

43612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5448 + ... + 5455.

2⁴³⁶¹² is an apocalyptic number.

It is an amenable number.

43612 is a deficient number, since it is larger than the sum of its proper divisors (32716).

43612 is a wasteful number, since it uses less digits than its factorization.

43612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10907 (or 10905 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 43612 is about 208.8348629899. The cubic root of 43612 is about 35.1994059817.

The spelling of 43612 in words is "forty-three thousand, six hundred twelve".