4340105021 has 4 divisors (see below), whose sum is σ = 4960120032. Its totient is φ = 3720090012.

The previous prime is 4340105009. The next prime is 4340105053. The reversal of 4340105021 is 1205010434.

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 4340105021 - 2⁶ = 4340104957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4340104984 and 4340105002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4340105071) 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 3 ways as a sum of consecutive naturals, for example, 310007495 + ... + 310007508.

It is an arithmetic number, because the mean of its divisors is an integer number (1240030008).

Almost surely, 2^4340105021 is an apocalyptic number.

It is an amenable number.

4340105021 is a deficient number, since it is larger than the sum of its proper divisors (620015011).

4340105021 is an equidigital number, since it uses as much as digits as its factorization.

4340105021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620015010.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4340105021 is about 65879.4734420366. The cubic root of 4340105021 is about 1631.1732079625.

Adding to 4340105021 its reverse (1205010434), we get a palindrome (5545115455).

The spelling of 4340105021 in words is "four billion, three hundred forty million, one hundred five thousand, twenty-one".