1344221040 has 40 divisors (see below), whose sum is σ = 4167085968. Its totient is φ = 358458880.

The previous prime is 1344220981. The next prime is 1344221107. The reversal of 1344221040 is 401224431.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1344220998 and 1344221016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2800221 + ... + 2800700.

Almost surely, 2^1344221040 is an apocalyptic number.

1344221040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1344221040 is an abundant number, since it is smaller than the sum of its proper divisors (2822864928).

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

1344221040 is a wasteful number, since it uses less digits than its factorization.

1344221040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600937 (or 5600931 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1344221040 is about 36663.6201158587. The cubic root of 1344221040 is about 1103.6301665020.

Adding to 1344221040 its reverse (401224431), we get a palindrome (1745445471).

The spelling of 1344221040 in words is "one billion, three hundred forty-four million, two hundred twenty-one thousand, forty".