10442400321 has 4 divisors (see below), whose sum is σ = 13923200432. Its totient is φ = 6961600212.

The previous prime is 10442400299. The next prime is 10442400329. The reversal of 10442400321 is 12300424401.

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.

It is not a de Polignac number, because 10442400321 - 2⁵ = 10442400289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10442400329) 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, 1740400051 + ... + 1740400056.

It is an arithmetic number, because the mean of its divisors is an integer number (3480800108).

Almost surely, 2^10442400321 is an apocalyptic number.

It is an amenable number.

10442400321 is a deficient number, since it is larger than the sum of its proper divisors (3480800111).

10442400321 is an equidigital number, since it uses as much as digits as its factorization.

10442400321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480800110.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 10442400321 its reverse (12300424401), we get a palindrome (22742824722).

The spelling of 10442400321 in words is "ten billion, four hundred forty-two million, four hundred thousand, three hundred twenty-one".