1420225 has 6 divisors (see below), whose sum is σ = 1761110. Its totient is φ = 1136160.

The previous prime is 1420207. The next prime is 1420253. The reversal of 1420225 is 5220241.

It can be written as a sum of positive squares in 3 ways, for example, as 20736 + 1399489 = 144^2 + 1183^2 .

It is not a de Polignac number, because 1420225 - 2⁹ = 1419713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1420199 and 1420208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28380 + ... + 28429.

2^1420225 is an apocalyptic number.

It is an amenable number.

1420225 is a deficient number, since it is larger than the sum of its proper divisors (340885).

1420225 is an equidigital number, since it uses as much as digits as its factorization.

1420225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56819 (or 56814 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1420225 is about 1191.7319329447. The cubic root of 1420225 is about 112.4050227194.

Adding to 1420225 its sum of digits (16), we get a palindrome (1420241).

Adding to 1420225 its reverse (5220241), we get a palindrome (6640466).

The spelling of 1420225 in words is "one million, four hundred twenty thousand, two hundred twenty-five".