2143105452 has 84 divisors (see below), whose sum is σ = 5817208320. Its totient is φ = 689707872.

The previous prime is 2143105451. The next prime is 2143105469. The reversal of 2143105452 is 2545013412.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2143105451) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 71893 + ... + 97235.

It is an arithmetic number, because the mean of its divisors is an integer number (69252480).

Almost surely, 2^2143105452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143105452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2908604160).

2143105452 is an abundant number, since it is smaller than the sum of its proper divisors (3674102868).

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

2143105452 is a wasteful number, since it uses less digits than its factorization.

2143105452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25394 (or 25377 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2143105452 is about 46293.6869562147. The cubic root of 2143105452 is about 1289.2817851689.

Adding to 2143105452 its reverse (2545013412), we get a palindrome (4688118864).

The spelling of 2143105452 in words is "two billion, one hundred forty-three million, one hundred five thousand, four hundred fifty-two".