2129443 has 2 divisors, whose sum is σ = 2129444. Its totient is φ = 2129442.

The previous prime is 2129431. The next prime is 2129447. The reversal of 2129443 is 3449212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2129443 - 2¹⁷ = 1998371 is a prime.

It is not a weakly prime, because it can be changed into another prime (2129447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064721 + 1064722.

It is an arithmetic number, because the mean of its divisors is an integer number (1064722).

2^2129443 is an apocalyptic number.

2129443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129443 is an equidigital number, since it uses as much as digits as its factorization.

2129443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 2129443 is about 1459.2611144000. The cubic root of 2129443 is about 128.6536187591.

The spelling of 2129443 in words is "two million, one hundred twenty-nine thousand, four hundred forty-three".