420121443102 has 16 divisors (see below), whose sum is σ = 840256904592. Its totient is φ = 140038144640.

The previous prime is 420121443083. The next prime is 420121443109. The reversal of 420121443102 is 201344121024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420121443109) 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, 172149 + ... + 932672.

It is an arithmetic number, because the mean of its divisors is an integer number (52516056537).

Almost surely, 2^420121443102 is an apocalyptic number.

420121443102 is an abundant number, since it is smaller than the sum of its proper divisors (420135461490).

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

420121443102 is a wasteful number, since it uses less digits than its factorization.

420121443102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168203.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 420121443102 its reverse (201344121024), we get a palindrome (621465564126).

The spelling of 420121443102 in words is "four hundred twenty billion, one hundred twenty-one million, four hundred forty-three thousand, one hundred two".