1043203430405 has 4 divisors (see below), whose sum is σ = 1251844116492. Its totient is φ = 834562744320.

The previous prime is 1043203430393. The next prime is 1043203430411. The reversal of 1043203430405 is 5040343023401.

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

It can be written as a sum of positive squares in 2 ways, for example, as 823835783716 + 219367646689 = 907654^2 + 468367^2 .

It is not a de Polignac number, because 1043203430405 - 2⁴ = 1043203430389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104320343036 + ... + 104320343045.

It is an arithmetic number, because the mean of its divisors is an integer number (312961029123).

Almost surely, 2^{1043203430405} is an apocalyptic number.

It is an amenable number.

1043203430405 is a deficient number, since it is larger than the sum of its proper divisors (208640686087).

1043203430405 is an equidigital number, since it uses as much as digits as its factorization.

1043203430405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208640686086.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 1043203430405 its reverse (5040343023401), we get a palindrome (6083546453806).

The spelling of 1043203430405 in words is "one trillion, forty-three billion, two hundred three million, four hundred thirty thousand, four hundred five".