1340024217 has 24 divisors (see below), whose sum is σ = 2081784096. Its totient is φ = 764483328.

The previous prime is 1340024177. The next prime is 1340024243. The reversal of 1340024217 is 7124200431.

It is a happy number.

It is not a de Polignac number, because 1340024217 - 2¹⁰ = 1340023193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1340024297) 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 23 ways as a sum of consecutive naturals, for example, 87433 + ... + 101609.

It is an arithmetic number, because the mean of its divisors is an integer number (86741004).

Almost surely, 2^1340024217 is an apocalyptic number.

It is an amenable number.

1340024217 is a deficient number, since it is larger than the sum of its proper divisors (741759879).

1340024217 is a wasteful number, since it uses less digits than its factorization.

1340024217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14837 (or 14830 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1340024217 is about 36606.3412129647. The cubic root of 1340024217 is about 1102.4804128543.

Adding to 1340024217 its reverse (7124200431), we get a palindrome (8464224648).

The spelling of 1340024217 in words is "one billion, three hundred forty million, twenty-four thousand, two hundred seventeen".