20420002124124 has 24 divisors (see below), whose sum is σ = 47669879995920. Its totient is φ = 6803351892864.

The previous prime is 20420002124117. The next prime is 20420002124143. The reversal of 20420002124124 is 42142120002402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20420002124094 and 20420002124103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414409569 + ... + 414458840.

It is an arithmetic number, because the mean of its divisors is an integer number (1986244999830).

Almost surely, 2^{20420002124124} is an apocalyptic number.

It is an amenable number.

20420002124124 is an abundant number, since it is smaller than the sum of its proper divisors (27249877871796).

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

20420002124124 is a wasteful number, since it uses less digits than its factorization.

20420002124124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828870469 (or 828870467 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 20420002124124 its reverse (42142120002402), we get a palindrome (62562122126526).

The spelling of 20420002124124 in words is "twenty trillion, four hundred twenty billion, two million, one hundred twenty-four thousand, one hundred twenty-four".