1340215 has 4 divisors (see below), whose sum is σ = 1608264. Its totient is φ = 1072168.

The previous prime is 1340179. The next prime is 1340221. The reversal of 1340215 is 5120431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5120431 = 569 ⋅8999.

It is a cyclic number.

It is not a de Polignac number, because 1340215 - 2¹¹ = 1338167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134017 + ... + 134026.

It is an arithmetic number, because the mean of its divisors is an integer number (402066).

2^1340215 is an apocalyptic number.

1340215 is a deficient number, since it is larger than the sum of its proper divisors (268049).

1340215 is an equidigital number, since it uses as much as digits as its factorization.

1340215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268048.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1340215 is about 1157.6765524100. The cubic root of 1340215 is about 110.2532731446.

Adding to 1340215 its reverse (5120431), we get a palindrome (6460646).

The spelling of 1340215 in words is "one million, three hundred forty thousand, two hundred fifteen".