2105843429 has 4 divisors (see below), whose sum is σ = 2154816576. Its totient is φ = 2056870284.

The previous prime is 2105843417. The next prime is 2105843449. The reversal of 2105843429 is 9243485012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2105843429 - 2²⁸ = 1837407973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2105843392 and 2105843401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105843449) 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, 24486509 + ... + 24486594.

It is an arithmetic number, because the mean of its divisors is an integer number (538704144).

Almost surely, 2^2105843429 is an apocalyptic number.

It is an amenable number.

2105843429 is a deficient number, since it is larger than the sum of its proper divisors (48973147).

2105843429 is an equidigital number, since it uses as much as digits as its factorization.

2105843429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48973146.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 2105843429 is about 45889.4696962168. The cubic root of 2105843429 is about 1281.7658385539.

The spelling of 2105843429 in words is "two billion, one hundred five million, eight hundred forty-three thousand, four hundred twenty-nine".