2143204245 has 64 divisors (see below), whose sum is σ = 4689431040. Its totient is φ = 904379904.

The previous prime is 2143204201. The next prime is 2143204289. The reversal of 2143204245 is 5424023412.

2143204245 is a `hidden beast` number, since 214 + 3 + 20 + 424 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (2143204201) and next prime (2143204289).

It is not a de Polignac number, because 2143204245 - 2¹⁰ = 2143203221 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74944 + ... + 99513.

It is an arithmetic number, because the mean of its divisors is an integer number (73272360).

Almost surely, 2^2143204245 is an apocalyptic number.

It is an amenable number.

2143204245 is an abundant number, since it is smaller than the sum of its proper divisors (2546226795).

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

2143204245 is a wasteful number, since it uses less digits than its factorization.

2143204245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174491 (or 174485 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 2143204245 is about 46294.7539684574. The cubic root of 2143204245 is about 1289.3015959934.

Adding to 2143204245 its reverse (5424023412), we get a palindrome (7567227657).

The spelling of 2143204245 in words is "two billion, one hundred forty-three million, two hundred four thousand, two hundred forty-five".