1043240203 has 4 divisors (see below), whose sum is σ = 1068685128. Its totient is φ = 1017795280.

The previous prime is 1043240147. The next prime is 1043240221. The reversal of 1043240203 is 3020423401.

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 1043240203 - 2²⁹ = 506369291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043240293) 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, 12722401 + ... + 12722482.

It is an arithmetic number, because the mean of its divisors is an integer number (267171282).

Almost surely, 2^1043240203 is an apocalyptic number.

1043240203 is a deficient number, since it is larger than the sum of its proper divisors (25444925).

1043240203 is an equidigital number, since it uses as much as digits as its factorization.

1043240203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25444924.

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

The square root of 1043240203 is about 32299.2291394083. The cubic root of 1043240203 is about 1014.2105059707.

Adding to 1043240203 its reverse (3020423401), we get a palindrome (4063663604).

The spelling of 1043240203 in words is "one billion, forty-three million, two hundred forty thousand, two hundred three".