43123806 has 64 divisors (see below), whose sum is σ = 110073600. Its totient is φ = 12376800.

The previous prime is 43123771. The next prime is 43123811. The reversal of 43123806 is 60832134.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 43123806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9376 + ... + 13196.

It is an arithmetic number, because the mean of its divisors is an integer number (1719900).

Almost surely, 2^43123806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43123806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55036800).

43123806 is an abundant number, since it is smaller than the sum of its proper divisors (66949794).

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

43123806 is a wasteful number, since it uses less digits than its factorization.

43123806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862 (or 3856 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 43123806 is about 6566.8718580463. The cubic root of 43123806 is about 350.6757177341.

It can be divided in two parts, 4312 and 3806, that added together give a palindrome (8118).

The spelling of 43123806 in words is "forty-three million, one hundred twenty-three thousand, eight hundred six".