20442424413420 has 72 divisors (see below), whose sum is σ = 62204298562224. Its totient is φ = 5434116590208.

The previous prime is 20442424413377. The next prime is 20442424413457. The reversal of 20442424413420 is 2431442424402.

20442424413420 is a `hidden beast` number, since 2 + 0 + 442 + 42 + 44 + 134 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179073894 + ... + 179188013.

It is an arithmetic number, because the mean of its divisors is an integer number (863948591142).

Almost surely, 2^{20442424413420} is an apocalyptic number.

20442424413420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20442424413420 is an abundant number, since it is smaller than the sum of its proper divisors (41761874148804).

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

20442424413420 is a wasteful number, since it uses less digits than its factorization.

20442424413420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358262239 (or 358262234 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 20442424413420 its reverse (2431442424402), we get a palindrome (22873866837822).

The spelling of 20442424413420 in words is "twenty trillion, four hundred forty-two billion, four hundred twenty-four million, four hundred thirteen thousand, four hundred twenty".