123887903 has 4 divisors (see below), whose sum is σ = 123953928. Its totient is φ = 123821880.

The previous prime is 123887893. The next prime is 123887909. The reversal of 123887903 is 309788321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309788321 = 797 ⋅388693.

It is a cyclic number.

It is not a de Polignac number, because 123887903 - 2⁴ = 123887887 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 (123887909) 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, 30113 + ... + 33978.

It is an arithmetic number, because the mean of its divisors is an integer number (30988482).

Almost surely, 2^123887903 is an apocalyptic number.

123887903 is a deficient number, since it is larger than the sum of its proper divisors (66025).

123887903 is an equidigital number, since it uses as much as digits as its factorization.

123887903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66024.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 123887903 is about 11130.4942837234. The cubic root of 123887903 is about 498.5127847676.

The spelling of 123887903 in words is "one hundred twenty-three million, eight hundred eighty-seven thousand, nine hundred three".