2123042442 has 16 divisors (see below), whose sum is σ = 4247743680. Its totient is φ = 707404352.

The previous prime is 2123042423. The next prime is 2123042447. The reversal of 2123042442 is 2442403212.

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 7 ways as a sum of consecutive naturals, for example, 52158 + ... + 83465.

It is an arithmetic number, because the mean of its divisors is an integer number (265483980).

Almost surely, 2^2123042442 is an apocalyptic number.

2123042442 is an abundant number, since it is smaller than the sum of its proper divisors (2124701238).

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

2123042442 is a wasteful number, since it uses less digits than its factorization.

2123042442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138237.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2123042442 is about 46076.4846966433. The cubic root of 2123042442 is about 1285.2458949962.

Adding to 2123042442 its reverse (2442403212), we get a palindrome (4565445654).

The spelling of 2123042442 in words is "two billion, one hundred twenty-three million, forty-two thousand, four hundred forty-two".