4134340021 has 12 divisors (see below), whose sum is σ = 4893514912. Its totient is φ = 3421517904.

The previous prime is 4134340013. The next prime is 4134340033. The reversal of 4134340021 is 1200434314.

It is not a de Polignac number, because 4134340021 - 2³ = 4134340013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4134339974 and 4134340001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4134340081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345255 + ... + 357028.

Almost surely, 2^4134340021 is an apocalyptic number.

It is an amenable number.

4134340021 is a deficient number, since it is larger than the sum of its proper divisors (759174891).

4134340021 is an equidigital number, since it uses as much as digits as its factorization.

4134340021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702348 (or 702319 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4134340021 is about 64298.8337452554. The cubic root of 4134340021 is about 1604.9766945047.

Adding to 4134340021 its reverse (1200434314), we get a palindrome (5334774335).

It can be divided in two parts, 413 and 4340021, that added together give a palindrome (4340434).

The spelling of 4134340021 in words is "four billion, one hundred thirty-four million, three hundred forty thousand, twenty-one".