4016421 has 12 divisors (see below), whose sum is σ = 6054048. Its totient is φ = 2561064.

The previous prime is 4016407. The next prime is 4016443. The reversal of 4016421 is 1246104.

4016421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4016421 - 2⁶ = 4016357 is a prime.

It is a super-2 number, since 2×4016421² = 32263275298482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4016394 and 4016403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4016021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9495 + ... + 9908.

It is an arithmetic number, because the mean of its divisors is an integer number (504504).

Almost surely, 2^4016421 is an apocalyptic number.

It is an amenable number.

4016421 is a deficient number, since it is larger than the sum of its proper divisors (2037627).

4016421 is a wasteful number, since it uses less digits than its factorization.

4016421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19432 (or 19429 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 4016421 is about 2004.1010453567. The cubic root of 4016421 is about 158.9570312275.

It can be divided in two parts, 40 and 16421, that added together give a palindrome (16461).

The spelling of 4016421 in words is "four million, sixteen thousand, four hundred twenty-one".