2012123442 has 16 divisors (see below), whose sum is σ = 4599139392. Its totient is φ = 574892400.

The previous prime is 2012123441. The next prime is 2012123453. The reversal of 2012123442 is 2443212102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2012123441) 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, 23953809 + ... + 23953892.

It is an arithmetic number, because the mean of its divisors is an integer number (287446212).

Almost surely, 2^2012123442 is an apocalyptic number.

2012123442 is an abundant number, since it is smaller than the sum of its proper divisors (2587015950).

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

2012123442 is a wasteful number, since it uses less digits than its factorization.

2012123442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47907713.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2012123442 is about 44856.6989645917. The cubic root of 2012123442 is about 1262.4616865411.

Adding to 2012123442 its reverse (2443212102), we get a palindrome (4455335544).

The spelling of 2012123442 in words is "two billion, twelve million, one hundred twenty-three thousand, four hundred forty-two".