10017421 has 2 divisors, whose sum is σ = 10017422. Its totient is φ = 10017420.

The previous prime is 10017373. The next prime is 10017431. The reversal of 10017421 is 12471001.

10017421 is digitally balanced in base 2, 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., 10017225 + 196 = 3165^2 + 14^2 .

It is an emirp because it is prime and its reverse (12471001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10017421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10017395 and 10017404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10017431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5008710 + 5008711.

It is an arithmetic number, because the mean of its divisors is an integer number (5008711).

Almost surely, 2^10017421 is an apocalyptic number.

It is an amenable number.

10017421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10017421 is an equidigital number, since it uses as much as digits as its factorization.

10017421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 10017421 is about 3165.0309635136. The cubic root of 10017421 is about 215.5685044456.

Adding to 10017421 its reverse (12471001), we get a palindrome (22488422).

The spelling of 10017421 in words is "ten million, seventeen thousand, four hundred twenty-one".