1020403340 has 24 divisors (see below), whose sum is σ = 2337651792. Its totient is φ = 371055680.

The previous prime is 1020403339. The next prime is 1020403343. The reversal of 1020403340 is 433040201.

1020403340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1020403343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2318879 + ... + 2319318.

It is an arithmetic number, because the mean of its divisors is an integer number (97402158).

Almost surely, 2^1020403340 is an apocalyptic number.

1020403340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020403340 is an abundant number, since it is smaller than the sum of its proper divisors (1317248452).

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

1020403340 is a wasteful number, since it uses less digits than its factorization.

1020403340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638217 (or 4638215 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1020403340 is about 31943.7527538641. The cubic root of 1020403340 is about 1006.7553754748.

Adding to 1020403340 its reverse (433040201), we get a palindrome (1453443541).

The spelling of 1020403340 in words is "one billion, twenty million, four hundred three thousand, three hundred forty".