43212406 has 4 divisors (see below), whose sum is σ = 64818612. Its totient is φ = 21606202.

The previous prime is 43212397. The next prime is 43212409. The reversal of 43212406 is 60421234.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60421234 = 2 ⋅30210617.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43212409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10803100 + ... + 10803103.

It is an arithmetic number, because the mean of its divisors is an integer number (16204653).

Almost surely, 2^43212406 is an apocalyptic number.

43212406 is a deficient number, since it is larger than the sum of its proper divisors (21606206).

43212406 is a wasteful number, since it uses less digits than its factorization.

43212406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21606205.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 43212406 is about 6573.6143787113. The cubic root of 43212406 is about 350.9157136709.

The spelling of 43212406 in words is "forty-three million, two hundred twelve thousand, four hundred six".