20442103424 has 32 divisors (see below), whose sum is σ = 43120066500. Its totient is φ = 9619812352.

The previous prime is 20442103391. The next prime is 20442103453. The reversal of 20442103424 is 42430124402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20403265600 + 38837824 = 142840^2 + 6232^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 20442103393 and 20442103402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4694999 + ... + 4699350.

Almost surely, 2^20442103424 is an apocalyptic number.

It is an amenable number.

20442103424 is an abundant number, since it is smaller than the sum of its proper divisors (22677963076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20442103424 is an equidigital number, since it uses as much as digits as its factorization.

20442103424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9394380 (or 9394368 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20442103424 its reverse (42430124402), we get a palindrome (62872227826).

The spelling of 20442103424 in words is "twenty billion, four hundred forty-two million, one hundred three thousand, four hundred twenty-four".