1204945 has 16 divisors (see below), whose sum is σ = 1670400. Its totient is φ = 817344.

The previous prime is 1204937. The next prime is 1204967. The reversal of 1204945 is 5494021.

It is a cyclic number.

It is not a de Polignac number, because 1204945 - 2³ = 1204937 is a prime.

It is a plaindrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5956 + ... + 6154.

It is an arithmetic number, because the mean of its divisors is an integer number (104400).

2^1204945 is an apocalyptic number.

It is an amenable number.

1204945 is a deficient number, since it is larger than the sum of its proper divisors (465455).

1204945 is a wasteful number, since it uses less digits than its factorization.

1204945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1204945 is about 1097.6998679056. The cubic root of 1204945 is about 106.4116248346.

Adding to 1204945 its reverse (5494021), we get a palindrome (6698966).

The spelling of 1204945 in words is "one million, two hundred four thousand, nine hundred forty-five".