420330245 has 4 divisors (see below), whose sum is σ = 504396300. Its totient is φ = 336264192.

The previous prime is 420330167. The next prime is 420330257. The reversal of 420330245 is 542033024.

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 197514916 + 222815329 = 14054^2 + 14927^2 .

It is a cyclic number.

It is not a de Polignac number, because 420330245 - 2¹⁶ = 420264709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420330245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42033020 + ... + 42033029.

It is an arithmetic number, because the mean of its divisors is an integer number (126099075).

Almost surely, 2^420330245 is an apocalyptic number.

It is an amenable number.

420330245 is a deficient number, since it is larger than the sum of its proper divisors (84066055).

420330245 is an equidigital number, since it uses as much as digits as its factorization.

420330245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84066054.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 420330245 is about 20501.9571017013. The cubic root of 420330245 is about 749.0834700497.

Adding to 420330245 its reverse (542033024), we get a palindrome (962363269).

The spelling of 420330245 in words is "four hundred twenty million, three hundred thirty thousand, two hundred forty-five".