20424420420 has 48 divisors (see below), whose sum is σ = 57232891968. Its totient is φ = 5442272640.

The previous prime is 20424420407. The next prime is 20424420479. The reversal of 20424420420 is 2402442402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54379 + ... + 209298.

It is an arithmetic number, because the mean of its divisors is an integer number (1192351916).

Almost surely, 2^20424420420 is an apocalyptic number.

20424420420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20424420420 is an abundant number, since it is smaller than the sum of its proper divisors (36808471548).

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

20424420420 is a wasteful number, since it uses less digits than its factorization.

20424420420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264980 (or 264978 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 20424420420 its reverse (2402442402), we get a palindrome (22826862822).

The spelling of 20424420420 in words is "twenty billion, four hundred twenty-four million, four hundred twenty thousand, four hundred twenty".