2143432 has 8 divisors (see below), whose sum is σ = 4018950. Its totient is φ = 1071712.

The previous prime is 2143417. The next prime is 2143441. The reversal of 2143432 is 2343412.

It can be written as a sum of positive squares in only one way, i.e., 1285956 + 857476 = 1134^2 + 926^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133957 + ... + 133972.

2^2143432 is an apocalyptic number.

It is an amenable number.

2143432 is a deficient number, since it is larger than the sum of its proper divisors (1875518).

2143432 is a wasteful number, since it uses less digits than its factorization.

2143432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267935 (or 267931 counting only the distinct ones).

The product of its digits is 576, while the sum is 19.

The square root of 2143432 is about 1464.0464473506. The cubic root of 2143432 is about 128.9347265071.

Adding to 2143432 its reverse (2343412), we get a palindrome (4486844).

The spelling of 2143432 in words is "two million, one hundred forty-three thousand, four hundred thirty-two".