1340021411 has 4 divisors (see below), whose sum is σ = 1358895024. Its totient is φ = 1321147800.

The previous prime is 1340021381. The next prime is 1340021467. The reversal of 1340021411 is 1141200431.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1340021411 - 2¹⁰ = 1340020387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340021411.

It is not an unprimeable number, because it can be changed into a prime (1340021611) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9436700 + ... + 9436841.

It is an arithmetic number, because the mean of its divisors is an integer number (339723756).

Almost surely, 2^1340021411 is an apocalyptic number.

1340021411 is a deficient number, since it is larger than the sum of its proper divisors (18873613).

1340021411 is an equidigital number, since it uses as much as digits as its factorization.

1340021411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18873612.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1340021411 is about 36606.3028862517. The cubic root of 1340021411 is about 1102.4796433254.

Adding to 1340021411 its reverse (1141200431), we get a palindrome (2481221842).

The spelling of 1340021411 in words is "one billion, three hundred forty million, twenty-one thousand, four hundred eleven".