20042424022420 has 12 divisors (see below), whose sum is σ = 42089090447124. Its totient is φ = 8016969608960.

The previous prime is 20042424022399. The next prime is 20042424022441. The reversal of 20042424022420 is 2422042424002.

It is an interprime number because it is at equal distance from previous prime (20042424022399) and next prime (20042424022441).

It can be written as a sum of positive squares in 2 ways, for example, as 15528864286224 + 4513559736196 = 3940668^2 + 2124514^2 .

It is a super-3 number, since 3×20042424022420³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

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, 501060600541 + ... + 501060600580.

It is an arithmetic number, because the mean of its divisors is an integer number (3507424203927).

Almost surely, 2^{20042424022420} is an apocalyptic number.

20042424022420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20042424022420 is an abundant number, since it is smaller than the sum of its proper divisors (22046666424704).

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

20042424022420 is a wasteful number, since it uses less digits than its factorization.

20042424022420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002121201130 (or 1002121201128 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20042424022420 its reverse (2422042424002), we get a palindrome (22464466446422).

The spelling of 20042424022420 in words is "twenty trillion, forty-two billion, four hundred twenty-four million, twenty-two thousand, four hundred twenty".