421327247 has 4 divisors (see below), whose sum is σ = 459629736. Its totient is φ = 383024760.

The previous prime is 421327237. The next prime is 421327259. The reversal of 421327247 is 742723124.

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 421327247 - 2¹⁸ = 421065103 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 (421327217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19151228 + ... + 19151249.

It is an arithmetic number, because the mean of its divisors is an integer number (114907434).

Almost surely, 2^421327247 is an apocalyptic number.

421327247 is a deficient number, since it is larger than the sum of its proper divisors (38302489).

421327247 is a wasteful number, since it uses less digits than its factorization.

421327247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38302488.

The product of its digits is 18816, while the sum is 32.

The square root of 421327247 is about 20526.2575010643. The cubic root of 421327247 is about 749.6752650462.

The spelling of 421327247 in words is "four hundred twenty-one million, three hundred twenty-seven thousand, two hundred forty-seven".