421316676 has 81 divisors (see below), whose sum is σ = 1174390399. Its totient is φ = 127261200.

The previous prime is 421316657. The next prime is 421316689. The reversal of 421316676 is 676613124.

It is a happy number.

The square root of 421316676 is 20526.

It is a perfect power (a square), and thus also a powerful number.

421316676 is a `hidden beast` number, since 421 + 3 + 166 + 76 = 666.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421316676.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1354561 + ... + 1354871.

Almost surely, 2^421316676 is an apocalyptic number.

421316676 is the 20526-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421316676

421316676 is an abundant number, since it is smaller than the sum of its proper divisors (753073723).

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

421316676 is a wasteful number, since it uses less digits than its factorization.

421316676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 327 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The cubic root of 421316676 is about 749.6689952693.

Multiplying 421316676 by its sum of digits (36), we get a square (15167400336 = 123156²).

421316676 divided by its sum of digits (36) gives a square (11703241 = 3421²).

The spelling of 421316676 in words is "four hundred twenty-one million, three hundred sixteen thousand, six hundred seventy-six".