2102043421 has 16 divisors (see below), whose sum is σ = 2248058880. Its totient is φ = 1958584320.

The previous prime is 2102043413. The next prime is 2102043431. The reversal of 2102043421 is 1243402012.

It is a cyclic number.

It is not a de Polignac number, because 2102043421 - 2³ = 2102043413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102043431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491165 + ... + 1492573.

It is an arithmetic number, because the mean of its divisors is an integer number (140503680).

Almost surely, 2^2102043421 is an apocalyptic number.

It is an amenable number.

2102043421 is a deficient number, since it is larger than the sum of its proper divisors (146015459).

2102043421 is a wasteful number, since it uses less digits than its factorization.

2102043421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2102043421 is about 45848.0470794558. The cubic root of 2102043421 is about 1280.9943894419.

Adding to 2102043421 its reverse (1243402012), we get a palindrome (3345445433).

The spelling of 2102043421 in words is "two billion, one hundred two million, forty-three thousand, four hundred twenty-one".