10671421 has 2 divisors, whose sum is σ = 10671422. Its totient is φ = 10671420.

The previous prime is 10671403. The next prime is 10671433. The reversal of 10671421 is 12417601.

10671421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10048900 + 622521 = 3170^2 + 789^2 .

It is a cyclic number.

It is not a de Polignac number, because 10671421 - 2⁹ = 10670909 is a prime.

It is a super-2 number, since 2×10671421² = 227758452318482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10671392 and 10671401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10671481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5335710 + 5335711.

It is an arithmetic number, because the mean of its divisors is an integer number (5335711).

Almost surely, 2^10671421 is an apocalyptic number.

It is an amenable number.

10671421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10671421 is an equidigital number, since it uses as much as digits as its factorization.

10671421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 10671421 is about 3266.7140982951. The cubic root of 10671421 is about 220.1611835325.

The spelling of 10671421 in words is "ten million, six hundred seventy-one thousand, four hundred twenty-one".