2112340142 has 16 divisors (see below), whose sum is σ = 3457372464. Its totient is φ = 959928000.

The previous prime is 2112340141. The next prime is 2112340163. The reversal of 2112340142 is 2410432112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112340141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 115592 + ... + 132612.

It is an arithmetic number, because the mean of its divisors is an integer number (216085779).

Almost surely, 2^2112340142 is an apocalyptic number.

2112340142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2112340142 is a deficient number, since it is larger than the sum of its proper divisors (1345032322).

2112340142 is a wasteful number, since it uses less digits than its factorization.

2112340142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22675.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2112340142 is about 45960.2017184433. The cubic root of 2112340142 is about 1283.0826056459.

Adding to 2112340142 its reverse (2410432112), we get a palindrome (4522772254).

The spelling of 2112340142 in words is "two billion, one hundred twelve million, three hundred forty thousand, one hundred forty-two".