1043140405 has 4 divisors (see below), whose sum is σ = 1251768492. Its totient is φ = 834512320.

The previous prime is 1043140381. The next prime is 1043140429. The reversal of 1043140405 is 5040413401.

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

It is an interprime number because it is at equal distance from previous prime (1043140381) and next prime (1043140429).

It can be written as a sum of positive squares in 2 ways, for example, as 407999601 + 635140804 = 20199^2 + 25202^2 .

It is not a de Polignac number, because 1043140405 - 2⁷ = 1043140277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104314036 + ... + 104314045.

It is an arithmetic number, because the mean of its divisors is an integer number (312942123).

Almost surely, 2^1043140405 is an apocalyptic number.

It is an amenable number.

1043140405 is a deficient number, since it is larger than the sum of its proper divisors (208628087).

1043140405 is an equidigital number, since it uses as much as digits as its factorization.

1043140405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208628086.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1043140405 is about 32297.6842049086. The cubic root of 1043140405 is about 1014.1781646149.

Adding to 1043140405 its reverse (5040413401), we get a palindrome (6083553806).

The spelling of 1043140405 in words is "one billion, forty-three million, one hundred forty thousand, four hundred five".