10875421 has 4 divisors (see below), whose sum is σ = 10885500. Its totient is φ = 10865344.

The previous prime is 10875419. The next prime is 10875437. The reversal of 10875421 is 12457801.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12457801 = 503 ⋅24767.

It can be written as a sum of positive squares in 2 ways, for example, as 5062500 + 5812921 = 2250^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 10875421 - 2¹ = 10875419 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 10875421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10875721) 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, 3196 + ... + 5653.

It is an arithmetic number, because the mean of its divisors is an integer number (2721375).

Almost surely, 2^10875421 is an apocalyptic number.

It is an amenable number.

10875421 is a deficient number, since it is larger than the sum of its proper divisors (10079).

10875421 is an equidigital number, since it uses as much as digits as its factorization.

10875421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10078.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 10875421 is about 3297.7903208057. The cubic root of 10875421 is about 221.5552400073. Note that the first 3 decimals are identical.

The spelling of 10875421 in words is "ten million, eight hundred seventy-five thousand, four hundred twenty-one".