1020045044 has 12 divisors (see below), whose sum is σ = 1786530564. Its totient is φ = 509607744.

The previous prime is 1020045031. The next prime is 1020045071. The reversal of 1020045044 is 4405400201.

It can be written as a sum of positive squares in 2 ways, for example, as 897721444 + 122323600 = 29962^2 + 11060^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 98129 + ... + 108024.

It is an arithmetic number, because the mean of its divisors is an integer number (148877547).

Almost surely, 2^1020045044 is an apocalyptic number.

It is an amenable number.

1020045044 is a deficient number, since it is larger than the sum of its proper divisors (766485520).

1020045044 is a wasteful number, since it uses less digits than its factorization.

1020045044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207394 (or 207392 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1020045044 is about 31938.1440287315. The cubic root of 1020045044 is about 1006.6375270915.

Adding to 1020045044 its reverse (4405400201), we get a palindrome (5425445245).

The spelling of 1020045044 in words is "one billion, twenty million, forty-five thousand, forty-four".