1004245487920 has 40 divisors (see below), whose sum is σ = 2457758697840. Its totient is φ = 380556184320.

The previous prime is 1004245487897. The next prime is 1004245487929. The reversal of 1004245487920 is 297845424001.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1004245487929) 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 7 ways as a sum of consecutive naturals, for example, 330342391 + ... + 330345430.

It is an arithmetic number, because the mean of its divisors is an integer number (61443967446).

Almost surely, 2^{1004245487920} is an apocalyptic number.

1004245487920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004245487920 is an abundant number, since it is smaller than the sum of its proper divisors (1453513209920).

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

1004245487920 is a wasteful number, since it uses less digits than its factorization.

1004245487920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660687853 (or 660687847 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 1004245487920 in words is "one trillion, four billion, two hundred forty-five million, four hundred eighty-seven thousand, nine hundred twenty".