20006242420 has 24 divisors (see below), whose sum is σ = 42140050848. Its totient is φ = 7978317600.

The previous prime is 20006242351. The next prime is 20006242427. The reversal of 20006242420 is 2424260002.

It is a junction number, because it is equal to n+sod(n) for n = 20006242391 and 20006242400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20006242427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1504426 + ... + 1517665.

It is an arithmetic number, because the mean of its divisors is an integer number (1755835452).

Almost surely, 2^20006242420 is an apocalyptic number.

20006242420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20006242420 is an abundant number, since it is smaller than the sum of its proper divisors (22133808428).

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

20006242420 is a wasteful number, since it uses less digits than its factorization.

20006242420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022431 (or 3022429 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The spelling of 20006242420 in words is "twenty billion, six million, two hundred forty-two thousand, four hundred twenty".