2112405340 has 24 divisors (see below), whose sum is σ = 4436918640. Its totient is φ = 844796928.

The previous prime is 2112405331. The next prime is 2112405343. The reversal of 2112405340 is 435042112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112405343) 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, 180796 + ... + 192124.

It is an arithmetic number, because the mean of its divisors is an integer number (184871610).

Almost surely, 2^2112405340 is an apocalyptic number.

2112405340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112405340 is an abundant number, since it is smaller than the sum of its proper divisors (2324513300).

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

2112405340 is a wasteful number, since it uses less digits than its factorization.

2112405340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20661 (or 20659 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2112405340 is about 45960.9110005448. The cubic root of 2112405340 is about 1283.0958064174.

Adding to 2112405340 its reverse (435042112), we get a palindrome (2547447452).

The spelling of 2112405340 in words is "two billion, one hundred twelve million, four hundred five thousand, three hundred forty".