10027921 has 2 divisors, whose sum is σ = 10027922. Its totient is φ = 10027920.

The previous prime is 10027907. The next prime is 10027949. The reversal of 10027921 is 12972001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8673025 + 1354896 = 2945^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 10027921 - 2⁵ = 10027889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10027892 and 10027901.

It is not a weakly prime, because it can be changed into another prime (10027021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5013960 + 5013961.

It is an arithmetic number, because the mean of its divisors is an integer number (5013961).

Almost surely, 2^10027921 is an apocalyptic number.

It is an amenable number.

10027921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10027921 is an equidigital number, since it uses as much as digits as its factorization.

10027921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 10027921 is about 3166.6892806210. The cubic root of 10027921 is about 215.6437959111.

Adding to 10027921 its reverse (12972001), we get a palindrome (22999922).

The spelling of 10027921 in words is "ten million, twenty-seven thousand, nine hundred twenty-one".