123240006 has 24 divisors (see below), whose sum is σ = 267428304. Its totient is φ = 41017200.

The previous prime is 123239993. The next prime is 123240011. The reversal of 123240006 is 600042321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7735 + ... + 17501.

It is an arithmetic number, because the mean of its divisors is an integer number (11142846).

Almost surely, 2^123240006 is an apocalyptic number.

123240006 is an abundant number, since it is smaller than the sum of its proper divisors (144188298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123240006 is a wasteful number, since it uses less digits than its factorization.

123240006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10476 (or 10473 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 123240006 is about 11101.3515393397. The cubic root of 123240006 is about 497.6422407518.

Adding to 123240006 its reverse (600042321), we get a palindrome (723282327).

The spelling of 123240006 in words is "one hundred twenty-three million, two hundred forty thousand, six".