1044020345 has 4 divisors (see below), whose sum is σ = 1252824420. Its totient is φ = 835216272.

The previous prime is 1044020339. The next prime is 1044020357. The reversal of 1044020345 is 5430204401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185940496 + 858079849 = 13636^2 + 29293^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044020345 - 2¹⁰ = 1044019321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1044020345.

It is an unprimeable number.

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, 104402030 + ... + 104402039.

It is an arithmetic number, because the mean of its divisors is an integer number (313206105).

Almost surely, 2^1044020345 is an apocalyptic number.

It is an amenable number.

1044020345 is a deficient number, since it is larger than the sum of its proper divisors (208804075).

1044020345 is an equidigital number, since it uses as much as digits as its factorization.

1044020345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208804074.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1044020345 is about 32311.3036722445. The cubic root of 1044020345 is about 1014.4632541118.

Adding to 1044020345 its reverse (5430204401), we get a palindrome (6474224746).

The spelling of 1044020345 in words is "one billion, forty-four million, twenty thousand, three hundred forty-five".