12340087 has 4 divisors (see below), whose sum is σ = 12347440. Its totient is φ = 12332736.

The previous prime is 12340061. The next prime is 12340091. The reversal of 12340087 is 78004321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78004321 = 449 ⋅173729.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12340087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214 + ... + 4972.

It is an arithmetic number, because the mean of its divisors is an integer number (3086860).

Almost surely, 2^12340087 is an apocalyptic number.

12340087 is a deficient number, since it is larger than the sum of its proper divisors (7353).

12340087 is an equidigital number, since it uses as much as digits as its factorization.

12340087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7352.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 12340087 is about 3512.8459971937. The cubic root of 12340087 is about 231.0855239503.

The spelling of 12340087 in words is "twelve million, three hundred forty thousand, eighty-seven".