2143240100 has 18 divisors (see below), whose sum is σ = 4650831234. Its totient is φ = 857296000.

The previous prime is 2143240097. The next prime is 2143240111. The reversal of 2143240100 is 10423412.

It can be written as a sum of positive squares in 3 ways, for example, as 365268544 + 1777971556 = 19112^2 + 42166^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 10716101 + ... + 10716300.

It is an arithmetic number, because the mean of its divisors is an integer number (258379513).

Almost surely, 2^2143240100 is an apocalyptic number.

2143240100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143240100 is an abundant number, since it is smaller than the sum of its proper divisors (2507591134).

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

2143240100 is a wasteful number, since it uses less digits than its factorization.

2143240100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21432415 (or 21432408 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2143240100 is about 46295.1412137386. The cubic root of 2143240100 is about 1289.3087857967.

Adding to 2143240100 its reverse (10423412), we get a palindrome (2153663512).

The spelling of 2143240100 in words is "two billion, one hundred forty-three million, two hundred forty thousand, one hundred".