4021201000420 has 12 divisors (see below), whose sum is σ = 8444522100924. Its totient is φ = 1608480400160.

The previous prime is 4021201000387. The next prime is 4021201000441. The reversal of 4021201000420 is 240001021204.

It can be written as a sum of positive squares in 2 ways, for example, as 3145146183936 + 876054816484 = 1773456^2 + 935978^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4021201000394 and 4021201000403.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 100530024991 + ... + 100530025030.

It is an arithmetic number, because the mean of its divisors is an integer number (703710175077).

Almost surely, 2^{4021201000420} is an apocalyptic number.

It is an amenable number.

4021201000420 is an abundant number, since it is smaller than the sum of its proper divisors (4423321100504).

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

4021201000420 is a wasteful number, since it uses less digits than its factorization.

4021201000420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201060050030 (or 201060050028 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 4021201000420 its reverse (240001021204), we get a palindrome (4261202021624).

The spelling of 4021201000420 in words is "four trillion, twenty-one billion, two hundred one million, four hundred twenty", and thus it is an aban number.