43138403 has 8 divisors (see below), whose sum is σ = 53783040. Its totient is φ = 33614280.

The previous prime is 43138397. The next prime is 43138427. The reversal of 43138403 is 30483134.

43138403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43138403 - 2¹² = 43134307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43138003) 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 7 ways as a sum of consecutive naturals, for example, 280043 + ... + 280196.

It is an arithmetic number, because the mean of its divisors is an integer number (6722880).

Almost surely, 2^43138403 is an apocalyptic number.

43138403 is a deficient number, since it is larger than the sum of its proper divisors (10644637).

43138403 is a wasteful number, since it uses less digits than its factorization.

43138403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560257.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 43138403 is about 6567.9831759833. The cubic root of 43138403 is about 350.7152800740.

The spelling of 43138403 in words is "forty-three million, one hundred thirty-eight thousand, four hundred three".