1040443020 has 72 divisors (see below), whose sum is σ = 3158640576. Its totient is φ = 277220352.

The previous prime is 1040442979. The next prime is 1040443037. The reversal of 1040443020 is 203440401.

1040443020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1040442984 and 1040443002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407869 + ... + 410411.

It is an arithmetic number, because the mean of its divisors is an integer number (43870008).

Almost surely, 2^1040443020 is an apocalyptic number.

1040443020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040443020 is an abundant number, since it is smaller than the sum of its proper divisors (2118197556).

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

1040443020 is a wasteful number, since it uses less digits than its factorization.

1040443020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831 (or 4826 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1040443020 is about 32255.8989953776. The cubic root of 1040443020 is about 1013.3032455382.

Adding to 1040443020 its reverse (203440401), we get a palindrome (1243883421).

The spelling of 1040443020 in words is "one billion, forty million, four hundred forty-three thousand, twenty".