1428055 has 4 divisors (see below), whose sum is σ = 1713672. Its totient is φ = 1142440.

The previous prime is 1428041. The next prime is 1428079. The reversal of 1428055 is 5508241.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1428055 - 2⁷ = 1427927 is a prime.

It is a Duffinian number.

1428055 is a lucky number.

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, 142801 + ... + 142810.

It is an arithmetic number, because the mean of its divisors is an integer number (428418).

2^1428055 is an apocalyptic number.

1428055 is a deficient number, since it is larger than the sum of its proper divisors (285617).

1428055 is an equidigital number, since it uses as much as digits as its factorization.

1428055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285616.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1428055 is about 1195.0125522353. The cubic root of 1428055 is about 112.6112151217.

It can be divided in two parts, 142805 and 5, that multiplied together give a square (714025 = 845²).

The spelling of 1428055 in words is "one million, four hundred twenty-eight thousand, fifty-five".