421534327 has 4 divisors (see below), whose sum is σ = 422343936. Its totient is φ = 420724720.

The previous prime is 421534277. The next prime is 421534357. The reversal of 421534327 is 723435124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 421534327 - 2⁷ = 421534199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421534357) 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, 404023 + ... + 405064.

It is an arithmetic number, because the mean of its divisors is an integer number (105585984).

Almost surely, 2^421534327 is an apocalyptic number.

421534327 is a deficient number, since it is larger than the sum of its proper divisors (809609).

421534327 is an equidigital number, since it uses as much as digits as its factorization.

421534327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809608.

The product of its digits is 20160, while the sum is 31.

The square root of 421534327 is about 20531.3011521433. The cubic root of 421534327 is about 749.7980653384.

The spelling of 421534327 in words is "four hundred twenty-one million, five hundred thirty-four thousand, three hundred twenty-seven".