1340321226 has 32 divisors (see below), whose sum is σ = 2757490368. Its totient is φ = 434004480.

The previous prime is 1340321197. The next prime is 1340321233. The reversal of 1340321226 is 6221230431.

It is a super-2 number, since 2×1340321226² = 3592921977732286152, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1340321196 and 1340321205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144921 + ... + 153891.

It is an arithmetic number, because the mean of its divisors is an integer number (86171574).

Almost surely, 2^1340321226 is an apocalyptic number.

1340321226 is an abundant number, since it is smaller than the sum of its proper divisors (1417169142).

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

1340321226 is a wasteful number, since it uses less digits than its factorization.

1340321226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9686.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1340321226 is about 36610.3977853287. The cubic root of 1340321226 is about 1102.5618597445.

Adding to 1340321226 its reverse (6221230431), we get a palindrome (7561551657).

The spelling of 1340321226 in words is "one billion, three hundred forty million, three hundred twenty-one thousand, two hundred twenty-six".