1213104 has 40 divisors (see below), whose sum is σ = 3174400. Its totient is φ = 399168.

The previous prime is 1213097. The next prime is 1213109. The reversal of 1213104 is 4013121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1213104.

It is not an unprimeable number, because it can be changed into a prime (1213109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5997 + ... + 6195.

It is an arithmetic number, because the mean of its divisors is an integer number (79360).

2^1213104 is an apocalyptic number.

It is an amenable number.

1213104 is an abundant number, since it is smaller than the sum of its proper divisors (1961296).

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

1213104 is a wasteful number, since it uses less digits than its factorization.

1213104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1213104 is about 1101.4100054022. The cubic root of 1213104 is about 106.6512651374.

Adding to 1213104 its reverse (4013121), we get a palindrome (5226225).

The spelling of 1213104 in words is "one million, two hundred thirteen thousand, one hundred four".