1420555 has 4 divisors (see below), whose sum is σ = 1704672. Its totient is φ = 1136440.

The previous prime is 1420519. The next prime is 1420561. The reversal of 1420555 is 5550241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5550241 = 401 ⋅13841.

It is not a de Polignac number, because 1420555 - 2¹³ = 1412363 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 142051 + ... + 142060.

It is an arithmetic number, because the mean of its divisors is an integer number (426168).

2^1420555 is an apocalyptic number.

1420555 is a deficient number, since it is larger than the sum of its proper divisors (284117).

1420555 is an equidigital number, since it uses as much as digits as its factorization.

1420555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284116.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1420555 is about 1191.8703788584. The cubic root of 1420555 is about 112.4137280970.

Adding to 1420555 its reverse (5550241), we get a palindrome (6970796).

The spelling of 1420555 in words is "one million, four hundred twenty thousand, five hundred fifty-five".