122865005 has 4 divisors (see below), whose sum is σ = 147438012. Its totient is φ = 98292000.

The previous prime is 122864993. The next prime is 122865037. The reversal of 122865005 is 500568221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64464841 + 58400164 = 8029^2 + 7642^2 .

It is a de Polignac number, because none of the positive numbers 2^k-122865005 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12286496 + ... + 12286505.

It is an arithmetic number, because the mean of its divisors is an integer number (36859503).

Almost surely, 2^122865005 is an apocalyptic number.

It is an amenable number.

122865005 is a deficient number, since it is larger than the sum of its proper divisors (24573007).

122865005 is an equidigital number, since it uses as much as digits as its factorization.

122865005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24573006.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 122865005 is about 11084.4487909864. The cubic root of 122865005 is about 497.1369774948.

The spelling of 122865005 in words is "one hundred twenty-two million, eight hundred sixty-five thousand, five".