2147129443 has 4 divisors (see below), whose sum is σ = 2153903040. Its totient is φ = 2140355848.

The previous prime is 2147129429. The next prime is 2147129473. The reversal of 2147129443 is 3449217412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2147129443 - 2⁹ = 2147128931 is a prime.

It is a super-2 number, since 2×2147129443² = 9220329689994980498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2147129473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3386323 + ... + 3386956.

It is an arithmetic number, because the mean of its divisors is an integer number (538475760).

Almost surely, 2^2147129443 is an apocalyptic number.

2147129443 is a deficient number, since it is larger than the sum of its proper divisors (6773597).

2147129443 is an equidigital number, since it uses as much as digits as its factorization.

2147129443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6773596.

The product of its digits is 48384, while the sum is 37.

The square root of 2147129443 is about 46337.1281263740. The cubic root of 2147129443 is about 1290.0882184326.

The spelling of 2147129443 in words is "two billion, one hundred forty-seven million, one hundred twenty-nine thousand, four hundred forty-three".