2101420443 has 16 divisors (see below), whose sum is σ = 2841011712. Its totient is φ = 1381500000.

The previous prime is 2101420429. The next prime is 2101420459. The reversal of 2101420443 is 3440241012.

It is not a de Polignac number, because 2101420443 - 2⁶ = 2101420379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101420403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62238 + ... + 89868.

It is an arithmetic number, because the mean of its divisors is an integer number (177563232).

Almost surely, 2^2101420443 is an apocalyptic number.

2101420443 is a deficient number, since it is larger than the sum of its proper divisors (739591269).

2101420443 is a wasteful number, since it uses less digits than its factorization.

2101420443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27986.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2101420443 is about 45841.2526334087. The cubic root of 2101420443 is about 1280.8678284387.

Adding to 2101420443 its reverse (3440241012), we get a palindrome (5541661455).

The spelling of 2101420443 in words is "two billion, one hundred one million, four hundred twenty thousand, four hundred forty-three".