10207421 has 4 divisors (see below), whose sum is σ = 11665632. Its totient is φ = 8749212.

The previous prime is 10207411. The next prime is 10207433. The reversal of 10207421 is 12470201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12470201 = 1993 ⋅6257.

It is a cyclic number.

It is not a de Polignac number, because 10207421 - 2¹⁰ = 10206397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10207421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10207411) 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 in 3 ways as a sum of consecutive naturals, for example, 729095 + ... + 729108.

It is an arithmetic number, because the mean of its divisors is an integer number (2916408).

Almost surely, 2^10207421 is an apocalyptic number.

It is an amenable number.

10207421 is a deficient number, since it is larger than the sum of its proper divisors (1458211).

10207421 is an equidigital number, since it uses as much as digits as its factorization.

10207421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458210.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 10207421 is about 3194.9054759100. The cubic root of 10207421 is about 216.9228703637.

Adding to 10207421 its reverse (12470201), we get a palindrome (22677622).

The spelling of 10207421 in words is "ten million, two hundred seven thousand, four hundred twenty-one".