123487 has 16 divisors (see below), whose sum is σ = 161280. Its totient is φ = 91872.

The previous prime is 123479. The next prime is 123491. The reversal of 123487 is 784321.

It is a cyclic number.

It is not a de Polignac number, because 123487 - 2³ = 123479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2064 + ... + 2122.

It is an arithmetic number, because the mean of its divisors is an integer number (10080).

2¹²³⁴⁸⁷ is an apocalyptic number.

123487 is a deficient number, since it is larger than the sum of its proper divisors (37793).

123487 is a wasteful number, since it uses less digits than its factorization.

123487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102.

The product of its digits is 1344, while the sum is 25.

The square root of 123487 is about 351.4071712416. The cubic root of 123487 is about 49.7974472221.

It can be divided in two parts, 12348 and 7, that multiplied together give a square (86436 = 294²).

The spelling of 123487 in words is "one hundred twenty-three thousand, four hundred eighty-seven".