1423285 has 4 divisors (see below), whose sum is σ = 1707948. Its totient is φ = 1138624.

The previous prime is 1423283. The next prime is 1423297. The reversal of 1423285 is 5823241.

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 505521 + 917764 = 711^2 + 958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423285 - 2¹ = 1423283 is a prime.

It is a Duffinian number.

1423285 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142324 + ... + 142333.

It is an arithmetic number, because the mean of its divisors is an integer number (426987).

2^1423285 is an apocalyptic number.

It is an amenable number.

1423285 is a deficient number, since it is larger than the sum of its proper divisors (284663).

1423285 is an equidigital number, since it uses as much as digits as its factorization.

1423285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284662.

The product of its digits is 1920, while the sum is 25.

The square root of 1423285 is about 1193.0150879180. The cubic root of 1423285 is about 112.4856936540.

The spelling of 1423285 in words is "one million, four hundred twenty-three thousand, two hundred eighty-five".