43212112 has 20 divisors (see below), whose sum is σ = 83967840. Its totient is φ = 21543008.

The previous prime is 43212097. The next prime is 43212139. The reversal of 43212112 is 21121234.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1983 + ... + 9505.

It is an arithmetic number, because the mean of its divisors is an integer number (4198392).

Almost surely, 2^43212112 is an apocalyptic number.

It is an amenable number.

43212112 is a deficient number, since it is larger than the sum of its proper divisors (40755728).

43212112 is a wasteful number, since it uses less digits than its factorization.

43212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7890 (or 7884 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 43212112 is about 6573.5920165462. The cubic root of 43212112 is about 350.9149178388.

Adding to 43212112 its reverse (21121234), we get a palindrome (64333346).

It can be divided in two parts, 432 and 12112, that added together give a square (12544 = 112²).

The spelling of 43212112 in words is "forty-three million, two hundred twelve thousand, one hundred twelve".