122587 has 4 divisors (see below), whose sum is σ = 129816. Its totient is φ = 115360.

The previous prime is 122579. The next prime is 122597. The reversal of 122587 is 785221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122587 - 2³ = 122579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122527) 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, 3589 + ... + 3622.

It is an arithmetic number, because the mean of its divisors is an integer number (32454).

2¹²²⁵⁸⁷ is an apocalyptic number.

122587 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

122587 is a deficient number, since it is larger than the sum of its proper divisors (7229).

122587 is an equidigital number, since it uses as much as digits as its factorization.

122587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7228.

The product of its digits is 1120, while the sum is 25.

The square root of 122587 is about 350.1242636551. The cubic root of 122587 is about 49.6761739278.

The spelling of 122587 in words is "one hundred twenty-two thousand, five hundred eighty-seven".