2123042444 has 18 divisors (see below), whose sum is σ = 3921162084. Its totient is φ = 1005651000.

The previous prime is 2123042423. The next prime is 2123042447. The reversal of 2123042444 is 4442403212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2123042447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 733682 + ... + 736569.

It is an arithmetic number, because the mean of its divisors is an integer number (217842338).

Almost surely, 2^2123042444 is an apocalyptic number.

It is an amenable number.

2123042444 is a deficient number, since it is larger than the sum of its proper divisors (1798119640).

2123042444 is a wasteful number, since it uses less digits than its factorization.

2123042444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470293 (or 1470272 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 2123042444 is about 46076.4847183463. The cubic root of 2123042444 is about 1285.2458953997.

Adding to 2123042444 its reverse (4442403212), we get a palindrome (6565445656).

The spelling of 2123042444 in words is "two billion, one hundred twenty-three million, forty-two thousand, four hundred forty-four".