1044145540 has 24 divisors (see below), whose sum is σ = 2228654232. Its totient is φ = 410810880.

The previous prime is 1044145523. The next prime is 1044145567. The reversal of 1044145540 is 455414401.

1044145540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18096516 + 1026049024 = 4254^2 + 32032^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1044145499 and 1044145508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426709 + ... + 429148.

It is an arithmetic number, because the mean of its divisors is an integer number (92860593).

Almost surely, 2^1044145540 is an apocalyptic number.

1044145540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1044145540 is an abundant number, since it is smaller than the sum of its proper divisors (1184508692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1044145540 is a wasteful number, since it uses less digits than its factorization.

1044145540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855927 (or 855925 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 1044145540 is about 32313.2409392806. The cubic root of 1044145540 is about 1014.5038026992.

Adding to 1044145540 its reverse (455414401), we get a palindrome (1499559941).

The spelling of 1044145540 in words is "one billion, forty-four million, one hundred forty-five thousand, five hundred forty".