1204913 has 4 divisors (see below), whose sum is σ = 1207140. Its totient is φ = 1202688.

The previous prime is 1204891. The next prime is 1204937. The reversal of 1204913 is 3194021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3194021 = 61 ⋅52361.

It can be written as a sum of positive squares in 2 ways, for example, as 652864 + 552049 = 808^2 + 743^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204913 - 2¹⁴ = 1188529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1204613) 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, 281 + ... + 1577.

It is an arithmetic number, because the mean of its divisors is an integer number (301785).

2^1204913 is an apocalyptic number.

It is an amenable number.

1204913 is a deficient number, since it is larger than the sum of its proper divisors (2227).

1204913 is an equidigital number, since it uses as much as digits as its factorization.

1204913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1204913 is about 1097.6852918756. The cubic root of 1204913 is about 106.4106828270.

Adding to 1204913 its reverse (3194021), we get a palindrome (4398934).

The spelling of 1204913 in words is "one million, two hundred four thousand, nine hundred thirteen".