2102140043 has 4 divisors (see below), whose sum is σ = 2109954960. Its totient is φ = 2094325128.

The previous prime is 2102140037. The next prime is 2102140067. The reversal of 2102140043 is 3400412012.

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 2102140043 - 2¹⁰ = 2102139019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102140003) 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, 3907055 + ... + 3907592.

It is an arithmetic number, because the mean of its divisors is an integer number (527488740).

Almost surely, 2^2102140043 is an apocalyptic number.

2102140043 is a deficient number, since it is larger than the sum of its proper divisors (7814917).

2102140043 is an equidigital number, since it uses as much as digits as its factorization.

2102140043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814916.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2102140043 is about 45849.1007872564. The cubic root of 2102140043 is about 1281.0140164300.

Adding to 2102140043 its reverse (3400412012), we get a palindrome (5502552055).

The spelling of 2102140043 in words is "two billion, one hundred two million, one hundred forty thousand, forty-three".