2143257432 has 32 divisors (see below), whose sum is σ = 5366098800. Its totient is φ = 713358464.

The previous prime is 2143257427. The next prime is 2143257469. The reversal of 2143257432 is 2347523412.

It is a junction number, because it is equal to n+sod(n) for n = 2143257393 and 2143257402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49707 + ... + 82202.

Almost surely, 2^2143257432 is an apocalyptic number.

It is an amenable number.

2143257432 is an abundant number, since it is smaller than the sum of its proper divisors (3222841368).

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

2143257432 is a wasteful number, since it uses less digits than its factorization.

2143257432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132595 (or 132591 counting only the distinct ones).

The product of its digits is 40320, while the sum is 33.

The square root of 2143257432 is about 46295.3284036305. The cubic root of 2143257432 is about 1289.3122612573.

The spelling of 2143257432 in words is "two billion, one hundred forty-three million, two hundred fifty-seven thousand, four hundred thirty-two".