1420220 has 12 divisors (see below), whose sum is σ = 2982504. Its totient is φ = 568080.

The previous prime is 1420207. The next prime is 1420253. The reversal of 1420220 is 220241.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35486 + ... + 35525.

It is an arithmetic number, because the mean of its divisors is an integer number (248542).

2^1420220 is an apocalyptic number.

1420220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420220 is an abundant number, since it is smaller than the sum of its proper divisors (1562284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1420220 is a wasteful number, since it uses less digits than its factorization.

1420220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71020 (or 71018 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1420220 is about 1191.7298351556. The cubic root of 1420220 is about 112.4048908093.

Adding to 1420220 its reverse (220241), we get a palindrome (1640461).

The spelling of 1420220 in words is "one million, four hundred twenty thousand, two hundred twenty".