122671587 has 4 divisors (see below), whose sum is σ = 163562120. Its totient is φ = 81781056.

The previous prime is 122671567. The next prime is 122671621. The reversal of 122671587 is 785176221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785176221 = 3 ⋅261725407.

It is not a de Polignac number, because 122671587 - 2¹⁰ = 122670563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122671547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20445262 + ... + 20445267.

It is an arithmetic number, because the mean of its divisors is an integer number (40890530).

Almost surely, 2^122671587 is an apocalyptic number.

122671587 is a deficient number, since it is larger than the sum of its proper divisors (40890533).

122671587 is an equidigital number, since it uses as much as digits as its factorization.

122671587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40890532.

The product of its digits is 47040, while the sum is 39.

The square root of 122671587 is about 11075.7206086105. The cubic root of 122671587 is about 496.8759708695.

The spelling of 122671587 in words is "one hundred twenty-two million, six hundred seventy-one thousand, five hundred eighty-seven".