123087 has 8 divisors (see below), whose sum is σ = 166320. Its totient is φ = 80960.

The previous prime is 123083. The next prime is 123091. The reversal of 123087 is 780321.

It is an interprime number because it is at equal distance from previous prime (123083) and next prime (123091).

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 123087 - 2² = 123083 is a prime.

It is an Ulam number.

123087 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123083) 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, 37 + ... + 497.

It is an arithmetic number, because the mean of its divisors is an integer number (20790).

2¹²³⁰⁸⁷ is an apocalyptic number.

123087 is a deficient number, since it is larger than the sum of its proper divisors (43233).

123087 is an equidigital number, since it uses as much as digits as its factorization.

123087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 123087 is about 350.8375692539. The cubic root of 123087 is about 49.7436209762.

The spelling of 123087 in words is "one hundred twenty-three thousand, eighty-seven".