1020443340 has 48 divisors (see below), whose sum is σ = 3265420032. Its totient is φ = 233244096.

The previous prime is 1020443339. The next prime is 1020443357. The reversal of 1020443340 is 433440201.

1020443340 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1020443340² = 2082609220300711200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 15 ways as a sum of consecutive naturals, for example, 1214394 + ... + 1215233.

It is an arithmetic number, because the mean of its divisors is an integer number (68029584).

Almost surely, 2^1020443340 is an apocalyptic number.

1020443340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020443340 is an abundant number, since it is smaller than the sum of its proper divisors (2244976692).

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

1020443340 is a wasteful number, since it uses less digits than its factorization.

1020443340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429646 (or 2429644 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1020443340 is about 31944.3788482418. The cubic root of 1020443340 is about 1006.7685303020.

Adding to 1020443340 its reverse (433440201), we get a palindrome (1453883541).

The spelling of 1020443340 in words is "one billion, twenty million, four hundred forty-three thousand, three hundred forty".