1043240403 has 8 divisors (see below), whose sum is σ = 1438952400. Its totient is φ = 671511008.

The previous prime is 1043240383. The next prime is 1043240423. The reversal of 1043240403 is 3040423401.

It is an interprime number because it is at equal distance from previous prime (1043240383) and next prime (1043240423).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1043240403 - 2⁸ = 1043240147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1043240403.

It is not an unprimeable number, because it can be changed into a prime (1043240423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5995548 + ... + 5995721.

It is an arithmetic number, because the mean of its divisors is an integer number (179869050).

Almost surely, 2^1043240403 is an apocalyptic number.

1043240403 is a deficient number, since it is larger than the sum of its proper divisors (395711997).

1043240403 is a wasteful number, since it uses less digits than its factorization.

1043240403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11991301.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1043240403 is about 32299.2322354572. The cubic root of 1043240403 is about 1014.2105707823.

Adding to 1043240403 its reverse (3040423401), we get a palindrome (4083663804).

The spelling of 1043240403 in words is "one billion, forty-three million, two hundred forty thousand, four hundred three".