2143213040 has 40 divisors (see below), whose sum is σ = 5064669888. Its totient is φ = 843229440.

The previous prime is 2143213021. The next prime is 2143213043. The reversal of 2143213040 is 403123412.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143213043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214712 + ... + 224471.

Almost surely, 2^2143213040 is an apocalyptic number.

2143213040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143213040 is an abundant number, since it is smaller than the sum of its proper divisors (2921456848).

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

2143213040 is a wasteful number, since it uses less digits than its factorization.

2143213040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439257 (or 439251 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2143213040 is about 46294.8489575244. The cubic root of 2143213040 is about 1289.3033596132.

Adding to 2143213040 its reverse (403123412), we get a palindrome (2546336452).

The spelling of 2143213040 in words is "two billion, one hundred forty-three million, two hundred thirteen thousand, forty".