421712356 has 12 divisors (see below), whose sum is σ = 794765692. Its totient is φ = 194636448.

The previous prime is 421712351. The next prime is 421712363. The reversal of 421712356 is 653217124.

It can be written as a sum of positive squares in 2 ways, for example, as 168584256 + 253128100 = 12984^2 + 15910^2 .

It is a super-2 number, since 2×421712356² = 355682622406141472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421712351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4054875 + ... + 4054978.

Almost surely, 2^421712356 is an apocalyptic number.

It is an amenable number.

421712356 is a deficient number, since it is larger than the sum of its proper divisors (373053336).

421712356 is a wasteful number, since it uses less digits than its factorization.

421712356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109870 (or 8109868 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 421712356 is about 20535.6362453176. The cubic root of 421712356 is about 749.9036059818.

The spelling of 421712356 in words is "four hundred twenty-one million, seven hundred twelve thousand, three hundred fifty-six".