43604123 has 4 divisors (see below), whose sum is σ = 44027568. Its totient is φ = 43180680.

The previous prime is 43604111. The next prime is 43604137. The reversal of 43604123 is 32140634.

It is a happy number.

43604123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43604123 - 2¹⁰ = 43603099 is a prime.

It is a super-4 number, since 4×43604123⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43604423) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 211568 + ... + 211773.

It is an arithmetic number, because the mean of its divisors is an integer number (11006892).

Almost surely, 2^43604123 is an apocalyptic number.

43604123 is a deficient number, since it is larger than the sum of its proper divisors (423445).

43604123 is a wasteful number, since it uses less digits than its factorization.

43604123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423444.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 43604123 is about 6603.3418054800. The cubic root of 43604123 is about 351.9728666887.

Adding to 43604123 its reverse (32140634), we get a palindrome (75744757).

The spelling of 43604123 in words is "forty-three million, six hundred four thousand, one hundred twenty-three".