2112420043 has 4 divisors (see below), whose sum is σ = 2114506368. Its totient is φ = 2110333720.

The previous prime is 2112420041. The next prime is 2112420061. The reversal of 2112420043 is 3400242112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2112420043 - 2¹ = 2112420041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112420043.

It is not an unprimeable number, because it can be changed into a prime (2112420041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041643 + ... + 1043668.

It is an arithmetic number, because the mean of its divisors is an integer number (528626592).

Almost surely, 2^2112420043 is an apocalyptic number.

2112420043 is a deficient number, since it is larger than the sum of its proper divisors (2086325).

2112420043 is a wasteful number, since it uses less digits than its factorization.

2112420043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086324.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2112420043 is about 45961.0709514041. The cubic root of 2112420043 is about 1283.0987833262.

Adding to 2112420043 its reverse (3400242112), we get a palindrome (5512662155).

The spelling of 2112420043 in words is "two billion, one hundred twelve million, four hundred twenty thousand, forty-three".