20442450103 has 4 divisors (see below), whose sum is σ = 20443348168. Its totient is φ = 20441552040.

The previous prime is 20442450043. The next prime is 20442450137. The reversal of 20442450103 is 30105424402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20442450103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442450503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413976 + ... + 460717.

It is an arithmetic number, because the mean of its divisors is an integer number (5110837042).

Almost surely, 2^20442450103 is an apocalyptic number.

20442450103 is a deficient number, since it is larger than the sum of its proper divisors (898065).

20442450103 is an equidigital number, since it uses as much as digits as its factorization.

20442450103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898064.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 20442450103 its reverse (30105424402), we get a palindrome (50547874505).

The spelling of 20442450103 in words is "twenty billion, four hundred forty-two million, four hundred fifty thousand, one hundred three".