2100420424124 has 24 divisors (see below), whose sum is σ = 4010304912768. Its totient is φ = 954638609840.

The previous prime is 2100420424099. The next prime is 2100420424129. The reversal of 2100420424124 is 4214240240012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2100420424093 and 2100420424102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100420424129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2014034 + ... + 2873529.

It is an arithmetic number, because the mean of its divisors is an integer number (167096038032).

Almost surely, 2^{2100420424124} is an apocalyptic number.

It is an amenable number.

2100420424124 is a deficient number, since it is larger than the sum of its proper divisors (1909884488644).

2100420424124 is a wasteful number, since it uses less digits than its factorization.

2100420424124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4897345 (or 4897343 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 2100420424124 its reverse (4214240240012), we get a palindrome (6314660664136).

The spelling of 2100420424124 in words is "two trillion, one hundred billion, four hundred twenty million, four hundred twenty-four thousand, one hundred twenty-four".