2143412240 has 20 divisors (see below), whose sum is σ = 4983433644. Its totient is φ = 857364864.

The previous prime is 2143412237. The next prime is 2143412263. The reversal of 2143412240 is 422143412.

It can be written as a sum of positive squares in 2 ways, for example, as 859193344 + 1284218896 = 29312^2 + 35836^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13396247 + ... + 13396406.

Almost surely, 2^2143412240 is an apocalyptic number.

2143412240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143412240 is an abundant number, since it is smaller than the sum of its proper divisors (2840021404).

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

2143412240 is a wasteful number, since it uses less digits than its factorization.

2143412240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26792666 (or 26792660 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2143412240 is about 46297.0003347949. Note that the first 3 decimals coincide. The cubic root of 2143412240 is about 1289.3433029549.

Adding to 2143412240 its reverse (422143412), we get a palindrome (2565555652).

The spelling of 2143412240 in words is "two billion, one hundred forty-three million, four hundred twelve thousand, two hundred forty".