421510656132 has 36 divisors (see below), whose sum is σ = 1077457022460. Its totient is φ = 138924859392.

The previous prime is 421510656103. The next prime is 421510656139. The reversal of 421510656132 is 231656015124.

421510656132 is a `hidden beast` number, since 4 + 2 + 1 + 510 + 6 + 5 + 6 + 132 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 219636571716 + 201874084416 = 468654^2 + 449304^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (421510656139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65775613 + ... + 65782020.

It is an arithmetic number, because the mean of its divisors is an integer number (29929361735).

Almost surely, 2^421510656132 is an apocalyptic number.

It is an amenable number.

421510656132 is an abundant number, since it is smaller than the sum of its proper divisors (655946366328).

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

421510656132 is a wasteful number, since it uses less digits than its factorization.

421510656132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131557732 (or 131557727 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 421510656132 in words is "four hundred twenty-one billion, five hundred ten million, six hundred fifty-six thousand, one hundred thirty-two".