10372921 has 4 divisors (see below), whose sum is σ = 11170852. Its totient is φ = 9574992.

The previous prime is 10372919. The next prime is 10372939. The reversal of 10372921 is 12927301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12927301 = 29 ⋅445769.

It can be written as a sum of positive squares in 2 ways, for example, as 4665600 + 5707321 = 2160^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 10372921 - 2¹ = 10372919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10372951) 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, 398946 + ... + 398971.

It is an arithmetic number, because the mean of its divisors is an integer number (2792713).

Almost surely, 2^10372921 is an apocalyptic number.

It is an amenable number.

10372921 is a deficient number, since it is larger than the sum of its proper divisors (797931).

10372921 is an equidigital number, since it uses as much as digits as its factorization.

10372921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797930.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 10372921 is about 3220.7019421238. The cubic root of 10372921 is about 218.0889643346.

The spelling of 10372921 in words is "ten million, three hundred seventy-two thousand, nine hundred twenty-one".