421201455049728 has 132 divisors (see below), whose sum is σ = 1220834440679568. Its totient is φ = 139866642063360.

The previous prime is 421201455049651. The next prime is 421201455049747. The reversal of 421201455049728 is 827940554102124.

421201455049728 is a `hidden beast` number, since 4 + 2 + 1 + 2 + 0 + 1 + 45 + 504 + 97 + 2 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84464563 + ... + 89312178.

It is an arithmetic number, because the mean of its divisors is an integer number (9248745762724).

Almost surely, 2^{421201455049728} is an apocalyptic number.

421201455049728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

421201455049728 is an abundant number, since it is smaller than the sum of its proper divisors (799632985629840).

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

421201455049728 is a wasteful number, since it uses less digits than its factorization.

421201455049728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173777030 (or 173777009 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 421201455049728 in words is "four hundred twenty-one trillion, two hundred one billion, four hundred fifty-five million, forty-nine thousand, seven hundred twenty-eight".