1204523 has 4 divisors (see below), whose sum is σ = 1208928. Its totient is φ = 1200120.

The previous prime is 1204519. The next prime is 1204529. The reversal of 1204523 is 3254021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3254021 = 17 ⋅191413.

It is a cyclic number.

It is not a de Polignac number, because 1204523 - 2² = 1204519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1204529) 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, 1763 + ... + 2348.

It is an arithmetic number, because the mean of its divisors is an integer number (302232).

2^1204523 is an apocalyptic number.

1204523 is a deficient number, since it is larger than the sum of its proper divisors (4405).

1204523 is an equidigital number, since it uses as much as digits as its factorization.

1204523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1204523 is about 1097.5076309530. The cubic root of 1204523 is about 106.3992007685.

Adding to 1204523 its reverse (3254021), we get a palindrome (4458544).

The spelling of 1204523 in words is "one million, two hundred four thousand, five hundred twenty-three".