43212004 has 72 divisors (see below), whose sum is σ = 90567680. Its totient is φ = 17962560.

The previous prime is 43211999. The next prime is 43212049. The reversal of 43212004 is 40021234.

43212004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 340189 + ... + 340315.

Almost surely, 2^43212004 is an apocalyptic number.

43212004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

43212004 is an abundant number, since it is smaller than the sum of its proper divisors (47355676).

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

43212004 is a wasteful number, since it uses less digits than its factorization.

43212004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 43212004 is about 6573.5838018542. The cubic root of 43212004 is about 350.9146254914.

Adding to 43212004 its reverse (40021234), we get a palindrome (83233238).

The spelling of 43212004 in words is "forty-three million, two hundred twelve thousand, four".