123287943 has 8 divisors (see below), whose sum is σ = 168393456. Its totient is φ = 80187200.

The previous prime is 123287939. The next prime is 123287947. The reversal of 123287943 is 349782321.

It is an interprime number because it is at equal distance from previous prime (123287939) and next prime (123287947).

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 123287943 - 2² = 123287939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123287947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501048 + ... + 501293.

It is an arithmetic number, because the mean of its divisors is an integer number (21049182).

Almost surely, 2^123287943 is an apocalyptic number.

123287943 is a deficient number, since it is larger than the sum of its proper divisors (45105513).

123287943 is a wasteful number, since it uses less digits than its factorization.

123287943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002385.

The product of its digits is 72576, while the sum is 39.

The square root of 123287943 is about 11103.5103908629. The cubic root of 123287943 is about 497.7067554725.

The spelling of 123287943 in words is "one hundred twenty-three million, two hundred eighty-seven thousand, nine hundred forty-three".