2123442142 has 8 divisors (see below), whose sum is σ = 3209477832. Its totient is φ = 1053616200.

The previous prime is 2123442127. The next prime is 2123442149. The reversal of 2123442142 is 2412443212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123442149) 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 3 ways as a sum of consecutive naturals, for example, 4052109 + ... + 4052632.

It is an arithmetic number, because the mean of its divisors is an integer number (401184729).

Almost surely, 2^2123442142 is an apocalyptic number.

2123442142 is a deficient number, since it is larger than the sum of its proper divisors (1086035690).

2123442142 is a wasteful number, since it uses less digits than its factorization.

2123442142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8104874.

The product of its digits is 3072, while the sum is 25.

The square root of 2123442142 is about 46080.8218459697. The cubic root of 2123442142 is about 1285.3265466338.

Adding to 2123442142 its reverse (2412443212), we get a palindrome (4535885354).

The spelling of 2123442142 in words is "two billion, one hundred twenty-three million, four hundred forty-two thousand, one hundred forty-two".