421705085 has 8 divisors (see below), whose sum is σ = 517814880. Its totient is φ = 329518224.

The previous prime is 421705027. The next prime is 421705087. The reversal of 421705085 is 580507124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421705085 - 2²² = 417510781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421705087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 980495 + ... + 980924.

It is an arithmetic number, because the mean of its divisors is an integer number (64726860).

Almost surely, 2^421705085 is an apocalyptic number.

It is an amenable number.

421705085 is a deficient number, since it is larger than the sum of its proper divisors (96109795).

421705085 is a wasteful number, since it uses less digits than its factorization.

421705085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961467.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 421705085 is about 20535.4592108382. The cubic root of 421705085 is about 749.8992961085.

The spelling of 421705085 in words is "four hundred twenty-one million, seven hundred five thousand, eighty-five".