4040210421 has 40 divisors (see below), whose sum is σ = 6539788640. Its totient is φ = 2470925088.

The previous prime is 4040210417. The next prime is 4040210443. The reversal of 4040210421 is 1240120404.

It is not a de Polignac number, because 4040210421 - 2² = 4040210417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4040210394 and 4040210403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040210921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 159870 + ... + 183408.

It is an arithmetic number, because the mean of its divisors is an integer number (163494716).

Almost surely, 2^4040210421 is an apocalyptic number.

It is an amenable number.

4040210421 is a deficient number, since it is larger than the sum of its proper divisors (2499578219).

4040210421 is a wasteful number, since it uses less digits than its factorization.

4040210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23727 (or 23718 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4040210421 is about 63562.6495750452. The cubic root of 4040210421 is about 1592.7024990522.

Adding to 4040210421 its reverse (1240120404), we get a palindrome (5280330825).

The spelling of 4040210421 in words is "four billion, forty million, two hundred ten thousand, four hundred twenty-one".