1020320442340 has 24 divisors (see below), whose sum is σ = 2192502533760. Its totient is φ = 398636823648.

The previous prime is 1020320442319. The next prime is 1020320442391. The reversal of 1020320442340 is 432440230201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593208700 + ... + 593210419.

It is an arithmetic number, because the mean of its divisors is an integer number (91354272240).

Almost surely, 2^{1020320442340} is an apocalyptic number.

1020320442340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020320442340 is an abundant number, since it is smaller than the sum of its proper divisors (1172182091420).

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

1020320442340 is a wasteful number, since it uses less digits than its factorization.

1020320442340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186419171 (or 1186419169 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 1020320442340 its reverse (432440230201), we get a palindrome (1452760672541).

The spelling of 1020320442340 in words is "one trillion, twenty billion, three hundred twenty million, four hundred forty-two thousand, three hundred forty".