2012404342340 has 144 divisors (see below), whose sum is σ = 5241655794816. Its totient is φ = 633541079040.

The previous prime is 2012404342327. The next prime is 2012404342451. The reversal of 2012404342340 is 432434042102.

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 47 ways as a sum of consecutive naturals, for example, 3749279 + ... + 4252281.

It is an arithmetic number, because the mean of its divisors is an integer number (36400387464).

Almost surely, 2^{2012404342340} is an apocalyptic number.

2012404342340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012404342340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2620827897408).

2012404342340 is an abundant number, since it is smaller than the sum of its proper divisors (3229251452476).

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

2012404342340 is a wasteful number, since it uses less digits than its factorization.

2012404342340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503118 (or 503075 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 2012404342340 its reverse (432434042102), we get a palindrome (2444838384442).

The spelling of 2012404342340 in words is "two trillion, twelve billion, four hundred four million, three hundred forty-two thousand, three hundred forty".