123906864 has 20 divisors (see below), whose sum is σ = 320092856. Its totient is φ = 41302272.

The previous prime is 123906859. The next prime is 123906869. The reversal of 123906864 is 468609321.

It is an interprime number because it is at equal distance from previous prime (123906859) and next prime (123906869).

It is not an unprimeable number, because it can be changed into a prime (123906869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290649 + ... + 1290744.

Almost surely, 2^123906864 is an apocalyptic number.

It is an amenable number.

123906864 is an abundant number, since it is smaller than the sum of its proper divisors (196185992).

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

123906864 is a wasteful number, since it uses less digits than its factorization.

123906864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581404 (or 2581398 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 123906864 is about 11131.3460102541. The cubic root of 123906864 is about 498.5382158724.

The spelling of 123906864 in words is "one hundred twenty-three million, nine hundred six thousand, eight hundred sixty-four".