1344104021 has 4 divisors (see below), whose sum is σ = 1447496652. Its totient is φ = 1240711392.

The previous prime is 1344103993. The next prime is 1344104029. The reversal of 1344104021 is 1204014431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 708358225 + 635745796 = 26615^2 + 25214^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344104021 - 2²⁶ = 1276995157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1344103984 and 1344104002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344104029) 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, 51696296 + ... + 51696321.

It is an arithmetic number, because the mean of its divisors is an integer number (361874163).

Almost surely, 2^1344104021 is an apocalyptic number.

It is an amenable number.

1344104021 is a deficient number, since it is larger than the sum of its proper divisors (103392631).

1344104021 is a wasteful number, since it uses less digits than its factorization.

1344104021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103392630.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1344104021 is about 36662.0242348946. The cubic root of 1344104021 is about 1103.5981406564.

Adding to 1344104021 its reverse (1204014431), we get a palindrome (2548118452).

The spelling of 1344104021 in words is "one billion, three hundred forty-four million, one hundred four thousand, twenty-one".