12340555 has 16 divisors (see below), whose sum is σ = 16018560. Its totient is φ = 9091072.

The previous prime is 12340553. The next prime is 12340571. The reversal of 12340555 is 55504321.

It is a cyclic number.

It is not a de Polignac number, because 12340555 - 2¹ = 12340553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12340553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2451 + ... + 5539.

It is an arithmetic number, because the mean of its divisors is an integer number (1001160).

Almost surely, 2^12340555 is an apocalyptic number.

12340555 is a deficient number, since it is larger than the sum of its proper divisors (3678005).

12340555 is a wasteful number, since it uses less digits than its factorization.

12340555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 12340555 is about 3512.9126092176. The cubic root of 12340555 is about 231.0884452333.

Adding to 12340555 its reverse (55504321), we get a palindrome (67844876).

The spelling of 12340555 in words is "twelve million, three hundred forty thousand, five hundred fifty-five".