122875817 has 4 divisors (see below), whose sum is σ = 124142676. Its totient is φ = 121608960.

The previous prime is 122875799. The next prime is 122875843. The reversal of 122875817 is 718578221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 718578221 = 37 ⋅19421033.

It can be written as a sum of positive squares in 2 ways, for example, as 35808256 + 87067561 = 5984^2 + 9331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122875817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122875877) 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, 633284 + ... + 633477.

It is an arithmetic number, because the mean of its divisors is an integer number (31035669).

Almost surely, 2^122875817 is an apocalyptic number.

It is an amenable number.

122875817 is a deficient number, since it is larger than the sum of its proper divisors (1266859).

122875817 is an equidigital number, since it uses as much as digits as its factorization.

122875817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266858.

The product of its digits is 62720, while the sum is 41.

The square root of 122875817 is about 11084.9364905713. The cubic root of 122875817 is about 497.1515595893.

The spelling of 122875817 in words is "one hundred twenty-two million, eight hundred seventy-five thousand, eight hundred seventeen".