9103421 has 2 divisors, whose sum is σ = 9103422. Its totient is φ = 9103420.

The previous prime is 9103417. The next prime is 9103441. The reversal of 9103421 is 1243019.

9103421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (9103441) can be obtained adding 9103421 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6446521 + 2656900 = 2539^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 9103421 - 2² = 9103417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9103393 and 9103402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9103441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4551710 + 4551711.

It is an arithmetic number, because the mean of its divisors is an integer number (4551711).

Almost surely, 2^9103421 is an apocalyptic number.

It is an amenable number.

9103421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9103421 is an equidigital number, since it uses as much as digits as its factorization.

9103421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 9103421 is about 3017.1875977473. The cubic root of 9103421 is about 208.8021065856.

The spelling of 9103421 in words is "nine million, one hundred three thousand, four hundred twenty-one".