123973287 has 8 divisors (see below), whose sum is σ = 165377904. Its totient is φ = 82608768.

The previous prime is 123973279. The next prime is 123973319. The reversal of 123973287 is 782379321.

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

It is not a de Polignac number, because 123973287 - 2³ = 123973279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123973207) 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, 1858 + ... + 15855.

It is an arithmetic number, because the mean of its divisors is an integer number (20672238).

Almost surely, 2^123973287 is an apocalyptic number.

123973287 is a deficient number, since it is larger than the sum of its proper divisors (41404617).

123973287 is a wasteful number, since it uses less digits than its factorization.

123973287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20049.

The product of its digits is 127008, while the sum is 42.

The square root of 123973287 is about 11134.3292119463. The cubic root of 123973287 is about 498.6272840843.

The spelling of 123973287 in words is "one hundred twenty-three million, nine hundred seventy-three thousand, two hundred eighty-seven".