420214321 has 4 divisors (see below), whose sum is σ = 434704500. Its totient is φ = 405724144.

The previous prime is 420214303. The next prime is 420214349. The reversal of 420214321 is 123412024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 301404321 + 118810000 = 17361^2 + 10900^2 .

It is a cyclic number.

It is not a de Polignac number, because 420214321 - 2²¹ = 418117169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420214391) 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, 7245046 + ... + 7245103.

It is an arithmetic number, because the mean of its divisors is an integer number (108676125).

Almost surely, 2^420214321 is an apocalyptic number.

It is an amenable number.

420214321 is a deficient number, since it is larger than the sum of its proper divisors (14490179).

420214321 is a wasteful number, since it uses less digits than its factorization.

420214321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14490178.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 420214321 is about 20499.1297620167. The cubic root of 420214321 is about 749.0145998082.

Adding to 420214321 its reverse (123412024), we get a palindrome (543626345).

The spelling of 420214321 in words is "four hundred twenty million, two hundred fourteen thousand, three hundred twenty-one".