1344021220 has 24 divisors (see below), whose sum is σ = 2830593024. Its totient is φ = 536056416.

The previous prime is 1344021193. The next prime is 1344021281. The reversal of 1344021220 is 221204431.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89892 + ... + 103771.

It is an arithmetic number, because the mean of its divisors is an integer number (117941376).

Almost surely, 2^1344021220 is an apocalyptic number.

1344021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1344021220 is an abundant number, since it is smaller than the sum of its proper divisors (1486571804).

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

1344021220 is a wasteful number, since it uses less digits than its factorization.

1344021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194019 (or 194017 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1344021220 is about 36660.8949699813. The cubic root of 1344021220 is about 1103.5754784952.

Adding to 1344021220 its reverse (221204431), we get a palindrome (1565225651).

The spelling of 1344021220 in words is "one billion, three hundred forty-four million, twenty-one thousand, two hundred twenty".