10016421 has 4 divisors (see below), whose sum is σ = 13355232. Its totient is φ = 6677612.

The previous prime is 10016411. The next prime is 10016429. The reversal of 10016421 is 12461001.

10016421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10016421 - 2¹⁵ = 9983653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10016421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10016429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1669401 + ... + 1669406.

It is an arithmetic number, because the mean of its divisors is an integer number (3338808).

Almost surely, 2^10016421 is an apocalyptic number.

It is an amenable number.

10016421 is a deficient number, since it is larger than the sum of its proper divisors (3338811).

10016421 is an equidigital number, since it uses as much as digits as its factorization.

10016421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338810.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 10016421 is about 3164.8729832333. The cubic root of 10016421 is about 215.5613310864.

Adding to 10016421 its reverse (12461001), we get a palindrome (22477422).

The spelling of 10016421 in words is "ten million, sixteen thousand, four hundred twenty-one".