1044145403 has 4 divisors (see below), whose sum is σ = 1193309040. Its totient is φ = 894981768.

The previous prime is 1044145391. The next prime is 1044145411. The reversal of 1044145403 is 3045414401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3045414401 = 31019 ⋅98179.

It is a cyclic number.

It is not a de Polignac number, because 1044145403 - 2⁶ = 1044145339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1044145303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74581808 + ... + 74581821.

It is an arithmetic number, because the mean of its divisors is an integer number (298327260).

Almost surely, 2^1044145403 is an apocalyptic number.

1044145403 is a deficient number, since it is larger than the sum of its proper divisors (149163637).

1044145403 is an equidigital number, since it uses as much as digits as its factorization.

1044145403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149163636.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1044145403 is about 32313.2388194065. The cubic root of 1044145403 is about 1014.5037583289.

Adding to 1044145403 its reverse (3045414401), we get a palindrome (4089559804).

The spelling of 1044145403 in words is "one billion, forty-four million, one hundred forty-five thousand, four hundred three".