1340040100212 has 54 divisors (see below), whose sum is σ = 3723256516434. Its totient is φ = 406072756320.

The previous prime is 1340040100187. The next prime is 1340040100229. The reversal of 1340040100212 is 2120010400431.

1340040100212 is a `hidden beast` number, since 1 + 3 + 400 + 40 + 10 + 0 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1192542625296 + 147497474916 = 1092036^2 + 384054^2 .

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

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 153811083 + ... + 153819794.

Almost surely, 2^{1340040100212} is an apocalyptic number.

1340040100212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1340040100212 is an abundant number, since it is smaller than the sum of its proper divisors (2383216416222).

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

1340040100212 is a wasteful number, since it uses less digits than its factorization.

1340040100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307630909 (or 307630893 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1340040100212 its reverse (2120010400431), we get a palindrome (3460050500643).

The spelling of 1340040100212 in words is "one trillion, three hundred forty billion, forty million, one hundred thousand, two hundred twelve".