1423573 has 4 divisors (see below), whose sum is σ = 1443148. Its totient is φ = 1404000.

The previous prime is 1423553. The next prime is 1423579. The reversal of 1423573 is 3753241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3753241 = 19 ⋅197539.

It can be written as a sum of positive squares in 2 ways, for example, as 786769 + 636804 = 887^2 + 798^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423573 - 2⁹ = 1423061 is a prime.

It is a d-powerful number, because it can be written as 1 + 4¹⁰ + 2¹¹ + 3³ + 5⁷ + 7⁶ + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423579) 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, 9678 + ... + 9823.

It is an arithmetic number, because the mean of its divisors is an integer number (360787).

2^1423573 is an apocalyptic number.

It is an amenable number.

1423573 is a deficient number, since it is larger than the sum of its proper divisors (19575).

1423573 is an equidigital number, since it uses as much as digits as its factorization.

1423573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19574.

The product of its digits is 2520, while the sum is 25.

The square root of 1423573 is about 1193.1357843934. The cubic root of 1423573 is about 112.4932802571.

The spelling of 1423573 in words is "one million, four hundred twenty-three thousand, five hundred seventy-three".