2143021432 has 8 divisors (see below), whose sum is σ = 4018165200. Its totient is φ = 1071510712.

The previous prime is 2143021429. The next prime is 2143021453. The reversal of 2143021432 is 2341203412.

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

It is a super-2 number, since 2×2143021432² = 9185081716022661248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133938832 + ... + 133938847.

It is an arithmetic number, because the mean of its divisors is an integer number (502270650).

Almost surely, 2^2143021432 is an apocalyptic number.

It is an amenable number.

2143021432 is a deficient number, since it is larger than the sum of its proper divisors (1875143768).

2143021432 is a wasteful number, since it uses less digits than its factorization.

2143021432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267877685 (or 267877681 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2143021432 is about 46292.7794801738. The cubic root of 2143021432 is about 1289.2649362746.

Adding to 2143021432 its reverse (2341203412), we get a palindrome (4484224844).

The spelling of 2143021432 in words is "two billion, one hundred forty-three million, twenty-one thousand, four hundred thirty-two".