1043440043 has 4 divisors (see below), whose sum is σ = 1098357960. Its totient is φ = 988522128.

The previous prime is 1043440009. The next prime is 1043440051. The reversal of 1043440043 is 3400443401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3400443401 = 29 ⋅117256669.

It is a cyclic number.

It is not a de Polignac number, because 1043440043 - 2¹² = 1043435947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043490043) 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, 27458930 + ... + 27458967.

It is an arithmetic number, because the mean of its divisors is an integer number (274589490).

Almost surely, 2^1043440043 is an apocalyptic number.

1043440043 is a deficient number, since it is larger than the sum of its proper divisors (54917917).

1043440043 is an equidigital number, since it uses as much as digits as its factorization.

1043440043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54917916.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1043440043 is about 32302.3225635557. The cubic root of 1043440043 is about 1014.2752615552.

Adding to 1043440043 its reverse (3400443401), we get a palindrome (4443883444).

The spelling of 1043440043 in words is "one billion, forty-three million, four hundred forty thousand, forty-three".