420127405506 has 32 divisors (see below), whose sum is σ = 965810131200. Its totient is φ = 135213417360.

The previous prime is 420127405501. The next prime is 420127405507. The reversal of 420127405506 is 605504721024.

It is a happy number.

420127405506 is a `hidden beast` number, since 4 + 20 + 12 + 74 + 0 + 550 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (420127405501) 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 15 ways as a sum of consecutive naturals, for example, 134138730 + ... + 134141861.

It is an arithmetic number, because the mean of its divisors is an integer number (30181566600).

Almost surely, 2^420127405506 is an apocalyptic number.

420127405506 is an abundant number, since it is smaller than the sum of its proper divisors (545682725694).

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

420127405506 is a wasteful number, since it uses less digits than its factorization.

420127405506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268280631 (or 268280625 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 420127405506 in words is "four hundred twenty billion, one hundred twenty-seven million, four hundred five thousand, five hundred six".