10442521 has 4 divisors (see below), whose sum is σ = 10450944. Its totient is φ = 10434100.

The previous prime is 10442519. The next prime is 10442557. The reversal of 10442521 is 12524401.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10442521 - 2¹ = 10442519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10442501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1945 + ... + 4966.

It is an arithmetic number, because the mean of its divisors is an integer number (2612736).

Almost surely, 2^10442521 is an apocalyptic number.

It is an amenable number.

10442521 is a deficient number, since it is larger than the sum of its proper divisors (8423).

10442521 is an equidigital number, since it uses as much as digits as its factorization.

10442521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8422.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 10442521 is about 3231.4889756891. The cubic root of 10442521 is about 218.5756536250.

Adding to 10442521 its reverse (12524401), we get a palindrome (22966922).

The spelling of 10442521 in words is "ten million, four hundred forty-two thousand, five hundred twenty-one".