1043400403 has 4 divisors (see below), whose sum is σ = 1053530608. Its totient is φ = 1033270200.

The previous prime is 1043400361. The next prime is 1043400419. The reversal of 1043400403 is 3040043401.

1043400403 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 1043400403 - 2²¹ = 1041303251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043400443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5064948 + ... + 5065153.

It is an arithmetic number, because the mean of its divisors is an integer number (263382652).

Almost surely, 2^1043400403 is an apocalyptic number.

1043400403 is a deficient number, since it is larger than the sum of its proper divisors (10130205).

1043400403 is a wasteful number, since it uses less digits than its factorization.

1043400403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10130204.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1043400403 is about 32301.7089795571. The cubic root of 1043400403 is about 1014.2624173799.

Adding to 1043400403 its reverse (3040043401), we get a palindrome (4083443804).

The spelling of 1043400403 in words is "one billion, forty-three million, four hundred thousand, four hundred three".