10340421 has 32 divisors (see below), whose sum is σ = 17337600. Its totient is φ = 5447232.

The previous prime is 10340419. The next prime is 10340441. The reversal of 10340421 is 12404301.

It is not a de Polignac number, because 10340421 - 2¹ = 10340419 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10340421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10340411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12991 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (541800).

Almost surely, 2^10340421 is an apocalyptic number.

It is an amenable number.

10340421 is a deficient number, since it is larger than the sum of its proper divisors (6997179).

10340421 is an equidigital number, since it uses as much as digits as its factorization.

10340421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 10340421 is about 3215.6524998824. The cubic root of 10340421 is about 217.8609569827.

Adding to 10340421 its reverse (12404301), we get a palindrome (22744722).

The spelling of 10340421 in words is "ten million, three hundred forty thousand, four hundred twenty-one".