20342102020 has 48 divisors (see below), whose sum is σ = 43730805888. Its totient is φ = 7944168960.

The previous prime is 20342101999. The next prime is 20342102087. The reversal of 20342102020 is 2020124302.

It is a super-2 number, since 2×20342102020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20342101985 and 20342102003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3016092 + ... + 3022828.

It is an arithmetic number, because the mean of its divisors is an integer number (911058456).

Almost surely, 2^20342102020 is an apocalyptic number.

20342102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20342102020 is an abundant number, since it is smaller than the sum of its proper divisors (23388703868).

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

20342102020 is a wasteful number, since it uses less digits than its factorization.

20342102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10300 (or 10298 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20342102020 its reverse (2020124302), we get a palindrome (22362226322).

The spelling of 20342102020 in words is "twenty billion, three hundred forty-two million, one hundred two thousand, twenty".