2143204155 has 24 divisors (see below), whose sum is σ = 3739500960. Its totient is φ = 1135468800.

The previous prime is 2143204109. The next prime is 2143204159. The reversal of 2143204155 is 5514023412.

2143204155 is a `hidden beast` number, since 214 + 32 + 0 + 415 + 5 = 666.

It is not a de Polignac number, because 2143204155 - 2⁷ = 2143204027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2143204159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150910 + ... + 164499.

It is an arithmetic number, because the mean of its divisors is an integer number (155812540).

Almost surely, 2^2143204155 is an apocalyptic number.

2143204155 is a deficient number, since it is larger than the sum of its proper divisors (1596296805).

2143204155 is a wasteful number, since it uses less digits than its factorization.

2143204155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315571 (or 315568 counting only the distinct ones).

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

The square root of 2143204155 is about 46294.7529964250. The cubic root of 2143204155 is about 1289.3015779461.

Adding to 2143204155 its reverse (5514023412), we get a palindrome (7657227567).

The spelling of 2143204155 in words is "two billion, one hundred forty-three million, two hundred four thousand, one hundred fifty-five".