123340647 has 32 divisors (see below), whose sum is σ = 179262720. Its totient is φ = 75168000.

The previous prime is 123340603. The next prime is 123340687. The reversal of 123340647 is 746043321.

It is not a de Polignac number, because 123340647 - 2⁶ = 123340583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123340687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491272 + ... + 491522.

It is an arithmetic number, because the mean of its divisors is an integer number (5601960).

Almost surely, 2^123340647 is an apocalyptic number.

123340647 is a deficient number, since it is larger than the sum of its proper divisors (55922073).

123340647 is a wasteful number, since it uses less digits than its factorization.

123340647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 123340647 is about 11105.8834407714. The cubic root of 123340647 is about 497.7776664345. Note that the first 3 decimals are identical.

Adding to 123340647 its reverse (746043321), we get a palindrome (869383968).

The spelling of 123340647 in words is "one hundred twenty-three million, three hundred forty thousand, six hundred forty-seven".