43125403 has 4 divisors (see below), whose sum is σ = 43151680. Its totient is φ = 43099128.

The previous prime is 43125377. The next prime is 43125419. The reversal of 43125403 is 30452134.

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 43125403 - 2¹³ = 43117211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43125443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10500 + ... + 14017.

It is an arithmetic number, because the mean of its divisors is an integer number (10787920).

Almost surely, 2^43125403 is an apocalyptic number.

43125403 is a deficient number, since it is larger than the sum of its proper divisors (26277).

43125403 is a wasteful number, since it uses less digits than its factorization.

43125403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26276.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 43125403 is about 6566.9934521058. The cubic root of 43125403 is about 350.6800465281.

Adding to 43125403 its reverse (30452134), we get a palindrome (73577537).

The spelling of 43125403 in words is "forty-three million, one hundred twenty-five thousand, four hundred three".