421681712 has 10 divisors (see below), whose sum is σ = 817008348. Its totient is φ = 210840848.

The previous prime is 421681699. The next prime is 421681717. The reversal of 421681712 is 217186124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (421681717) by changing a digit.

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 as a sum of consecutive naturals, namely, 13177538 + ... + 13177569.

Almost surely, 2^421681712 is an apocalyptic number.

It is an amenable number.

421681712 is a deficient number, since it is larger than the sum of its proper divisors (395326636).

421681712 is a wasteful number, since it uses less digits than its factorization.

421681712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26355115 (or 26355109 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 421681712 is about 20534.8901141448. The cubic root of 421681712 is about 749.8854414656.

The spelling of 421681712 in words is "four hundred twenty-one million, six hundred eighty-one thousand, seven hundred twelve".