1427823 has 6 divisors (see below), whose sum is σ = 2062424. Its totient is φ = 951876.

The previous prime is 1427821. The next prime is 1427843. The reversal of 1427823 is 3287241.

It is not a de Polignac number, because 1427823 - 2¹ = 1427821 is a prime.

It is a Duffinian number.

1427823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427821) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 79315 + ... + 79332.

2^1427823 is an apocalyptic number.

1427823 is a deficient number, since it is larger than the sum of its proper divisors (634601).

1427823 is a wasteful number, since it uses less digits than its factorization.

1427823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158653 (or 158650 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1427823 is about 1194.9154781825. The cubic root of 1427823 is about 112.6051165665.

The spelling of 1427823 in words is "one million, four hundred twenty-seven thousand, eight hundred twenty-three".