1423206 has 24 divisors (see below), whose sum is σ = 3265704. Its totient is φ = 446400.

The previous prime is 1423193. The next prime is 1423231. The reversal of 1423206 is 6023241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 2020 + ... + 2631.

It is an arithmetic number, because the mean of its divisors is an integer number (136071).

2^1423206 is an apocalyptic number.

1423206 is an abundant number, since it is smaller than the sum of its proper divisors (1842498).

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

1423206 is a wasteful number, since it uses less digits than its factorization.

1423206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4676 (or 4673 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1423206 is about 1192.9819780701. The cubic root of 1423206 is about 112.4836124278.

Adding to 1423206 its reverse (6023241), we get a palindrome (7446447).

It can be divided in two parts, 14 and 23206, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 1423206 in words is "one million, four hundred twenty-three thousand, two hundred six".