2143520450 has 12 divisors (see below), whose sum is σ = 3986948130. Its totient is φ = 857408160.

The previous prime is 2143520447. The next prime is 2143520461. The reversal of 2143520450 is 540253412.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1967188609 + 176331841 = 44353^2 + 13279^2 .

It is a super-4 number, since 4×2143520450⁴ (a number of 38 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21435155 + ... + 21435254.

Almost surely, 2^2143520450 is an apocalyptic number.

2143520450 is a deficient number, since it is larger than the sum of its proper divisors (1843427680).

2143520450 is a wasteful number, since it uses less digits than its factorization.

2143520450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42870421 (or 42870416 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2143520450 is about 46298.1689702735. The cubic root of 2143520450 is about 1289.3650000552.

Adding to 2143520450 its reverse (540253412), we get a palindrome (2683773862).

The spelling of 2143520450 in words is "two billion, one hundred forty-three million, five hundred twenty thousand, four hundred fifty".