1340423412020 has 48 divisors (see below), whose sum is σ = 3509472210048. Its totient is φ = 417794309760.

The previous prime is 1340423412019. The next prime is 1340423412067. The reversal of 1340423412020 is 202143240431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435200867 + ... + 435203946.

It is an arithmetic number, because the mean of its divisors is an integer number (73114004376).

Almost surely, 2^{1340423412020} is an apocalyptic number.

1340423412020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340423412020 is an abundant number, since it is smaller than the sum of its proper divisors (2169048798028).

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

1340423412020 is a wasteful number, since it uses less digits than its factorization.

1340423412020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870404840 (or 870404838 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1340423412020 its reverse (202143240431), we get a palindrome (1542566652451).

The spelling of 1340423412020 in words is "one trillion, three hundred forty billion, four hundred twenty-three million, four hundred twelve thousand, twenty".