123140806 has 8 divisors (see below), whose sum is σ = 186059880. Its totient is φ = 61120848.

The previous prime is 123140803. The next prime is 123140807. The reversal of 123140806 is 608041321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123140803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224436 + ... + 224983.

It is an arithmetic number, because the mean of its divisors is an integer number (23257485).

Almost surely, 2^123140806 is an apocalyptic number.

123140806 is a deficient number, since it is larger than the sum of its proper divisors (62919074).

123140806 is a wasteful number, since it uses less digits than its factorization.

123140806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449558.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 123140806 is about 11096.8827154296. The cubic root of 123140806 is about 497.5086819525.

The spelling of 123140806 in words is "one hundred twenty-three million, one hundred forty thousand, eight hundred six".