420110321 has 4 divisors (see below), whose sum is σ = 431464692. Its totient is φ = 408755952.

The previous prime is 420110221. The next prime is 420110359. The reversal of 420110321 is 123011024.

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 315559696 + 104550625 = 17764^2 + 10225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420110321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420110296 and 420110305.

It is not an unprimeable number, because it can be changed into a prime (420110371) 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, 5677130 + ... + 5677203.

It is an arithmetic number, because the mean of its divisors is an integer number (107866173).

Almost surely, 2^420110321 is an apocalyptic number.

It is an amenable number.

420110321 is a deficient number, since it is larger than the sum of its proper divisors (11354371).

420110321 is a wasteful number, since it uses less digits than its factorization.

420110321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11354370.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 420110321 is about 20496.5929119939. The cubic root of 420110321 is about 748.9528028142.

Adding to 420110321 its reverse (123011024), we get a palindrome (543121345).

The spelling of 420110321 in words is "four hundred twenty million, one hundred ten thousand, three hundred twenty-one".