1340442213 has 8 divisors (see below), whose sum is σ = 1949734176. Its totient is φ = 812389200.

The previous prime is 1340442211. The next prime is 1340442227. The reversal of 1340442213 is 3122440431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1340442213 - 2¹ = 1340442211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340442211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20309698 + ... + 20309763.

It is an arithmetic number, because the mean of its divisors is an integer number (243716772).

Almost surely, 2^1340442213 is an apocalyptic number.

It is an amenable number.

1340442213 is a deficient number, since it is larger than the sum of its proper divisors (609291963).

1340442213 is a wasteful number, since it uses less digits than its factorization.

1340442213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40619475.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1340442213 is about 36612.0501064882. The cubic root of 1340442213 is about 1102.5950337915.

Adding to 1340442213 its reverse (3122440431), we get a palindrome (4462882644).

The spelling of 1340442213 in words is "one billion, three hundred forty million, four hundred forty-two thousand, two hundred thirteen".