123504863 has 4 divisors (see below), whose sum is σ = 124322928. Its totient is φ = 122686800.

The previous prime is 123504827. The next prime is 123504889. The reversal of 123504863 is 368405321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368405321 = 97 ⋅3797993.

It is a cyclic number.

It is not a de Polignac number, because 123504863 - 2¹⁰ = 123503839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123504803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408806 + ... + 409107.

It is an arithmetic number, because the mean of its divisors is an integer number (31080732).

Almost surely, 2^123504863 is an apocalyptic number.

123504863 is a deficient number, since it is larger than the sum of its proper divisors (818065).

123504863 is an equidigital number, since it uses as much as digits as its factorization.

123504863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818064.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 123504863 is about 11113.2741800065. The cubic root of 123504863 is about 497.9984825467.

The spelling of 123504863 in words is "one hundred twenty-three million, five hundred four thousand, eight hundred sixty-three".