1044213505 has 24 divisors (see below), whose sum is σ = 1292086080. Its totient is φ = 810099360.

The previous prime is 1044213503. The next prime is 1044213509. The reversal of 1044213505 is 5053124401.

It is a happy number.

It is not a de Polignac number, because 1044213505 - 2¹ = 1044213503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1044213505.

It is not an unprimeable number, because it can be changed into a prime (1044213503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1654540 + ... + 1655170.

It is an arithmetic number, because the mean of its divisors is an integer number (53836920).

Almost surely, 2^1044213505 is an apocalyptic number.

It is an amenable number.

1044213505 is a deficient number, since it is larger than the sum of its proper divisors (247872575).

1044213505 is an equidigital number, since it uses as much as digits as its factorization.

1044213505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1044213505 is about 32314.2925808380. The cubic root of 1044213505 is about 1014.5258140799.

Adding to 1044213505 its reverse (5053124401), we get a palindrome (6097337906).

The spelling of 1044213505 in words is "one billion, forty-four million, two hundred thirteen thousand, five hundred five".