1020544004 has 12 divisors (see below), whose sum is σ = 1816222800. Its totient is φ = 501623208.

The previous prime is 1020543967. The next prime is 1020544009. The reversal of 1020544004 is 4004450201.

It is not an unprimeable number, because it can be changed into a prime (1020544009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2161934 + ... + 2162405.

It is an arithmetic number, because the mean of its divisors is an integer number (151351900).

Almost surely, 2^1020544004 is an apocalyptic number.

It is an amenable number.

1020544004 is a deficient number, since it is larger than the sum of its proper divisors (795678796).

1020544004 is a wasteful number, since it uses less digits than its factorization.

1020544004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324402 (or 4324400 counting only the distinct ones).

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

The square root of 1020544004 is about 31945.9544230565. The cubic root of 1020544004 is about 1006.8016342190.

Adding to 1020544004 its reverse (4004450201), we get a palindrome (5024994205).

The spelling of 1020544004 in words is "one billion, twenty million, five hundred forty-four thousand, four".