123912071 has 8 divisors (see below), whose sum is σ = 125625264. Its totient is φ = 122209920.

The previous prime is 123912067. The next prime is 123912073. The reversal of 123912071 is 170219321.

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

It is a cyclic number.

It is not a de Polignac number, because 123912071 - 2² = 123912067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123912071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123912073) 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 7 ways as a sum of consecutive naturals, for example, 21245 + ... + 26441.

It is an arithmetic number, because the mean of its divisors is an integer number (15703158).

Almost surely, 2^123912071 is an apocalyptic number.

123912071 is a deficient number, since it is larger than the sum of its proper divisors (1713193).

123912071 is a wasteful number, since it uses less digits than its factorization.

123912071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 123912071 is about 11131.5798968520. The cubic root of 123912071 is about 498.5451992147.

The spelling of 123912071 in words is "one hundred twenty-three million, nine hundred twelve thousand, seventy-one".