2123442030 has 64 divisors (see below), whose sum is σ = 5295845376. Its totient is φ = 544320000.

The previous prime is 2123442019. The next prime is 2123442053. The reversal of 2123442030 is 302443212.

It is a junction number, because it is equal to n+sod(n) for n = 2123441988 and 2123442006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132870 + ... + 147990.

It is an arithmetic number, because the mean of its divisors is an integer number (82747584).

Almost surely, 2^2123442030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123442030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2647922688).

2123442030 is an abundant number, since it is smaller than the sum of its proper divisors (3172403346).

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

2123442030 is a wasteful number, since it uses less digits than its factorization.

2123442030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15313.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2123442030 is about 46080.8206307136. The cubic root of 2123442030 is about 1285.3265240358.

Adding to 2123442030 its reverse (302443212), we get a palindrome (2425885242).

It can be divided in two parts, 2123 and 442030, that added together give a triangular number (444153 = T₉₄₂).

The spelling of 2123442030 in words is "two billion, one hundred twenty-three million, four hundred forty-two thousand, thirty".