4135144021 has 16 divisors (see below), whose sum is σ = 4397342400. Its totient is φ = 3877573248.

The previous prime is 4135143997. The next prime is 4135144031. The reversal of 4135144021 is 1204415314.

It is a cyclic number.

It is not a de Polignac number, because 4135144021 - 2⁷ = 4135143893 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 (4135144031) 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, 968790 + ... + 973048.

It is an arithmetic number, because the mean of its divisors is an integer number (274833900).

Almost surely, 2^4135144021 is an apocalyptic number.

It is an amenable number.

4135144021 is a deficient number, since it is larger than the sum of its proper divisors (262198379).

4135144021 is a wasteful number, since it uses less digits than its factorization.

4135144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4788.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 4135144021 is about 64305.0854987380. The cubic root of 4135144021 is about 1605.0807270402.

Adding to 4135144021 its reverse (1204415314), we get a palindrome (5339559335).

The spelling of 4135144021 in words is "four billion, one hundred thirty-five million, one hundred forty-four thousand, twenty-one".