421870327 has 4 divisors (see below), whose sum is σ = 428786296. Its totient is φ = 414954360.

The previous prime is 421870313. The next prime is 421870343. The reversal of 421870327 is 723078124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421870327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421870292 and 421870301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421870367) 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 3 ways as a sum of consecutive naturals, for example, 3457893 + ... + 3458014.

It is an arithmetic number, because the mean of its divisors is an integer number (107196574).

Almost surely, 2^421870327 is an apocalyptic number.

421870327 is a deficient number, since it is larger than the sum of its proper divisors (6915969).

421870327 is an equidigital number, since it uses as much as digits as its factorization.

421870327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6915968.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 421870327 is about 20539.4821502393. The cubic root of 421870327 is about 749.9972308046.

The spelling of 421870327 in words is "four hundred twenty-one million, eight hundred seventy thousand, three hundred twenty-seven".