122870305 has 8 divisors (see below), whose sum is σ = 156117672. Its totient is φ = 92514048.

The previous prime is 122870291. The next prime is 122870327. The reversal of 122870305 is 503078221.

It can be written as a sum of positive squares in 4 ways, for example, as 68095504 + 54774801 = 8252^2 + 7401^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122870305 - 2⁷ = 122870177 is a prime.

It is a super-2 number, since 2×122870305² = 30194223701586050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 722682 + ... + 722851.

It is an arithmetic number, because the mean of its divisors is an integer number (19514709).

Almost surely, 2^122870305 is an apocalyptic number.

It is an amenable number.

122870305 is a deficient number, since it is larger than the sum of its proper divisors (33247367).

122870305 is a wasteful number, since it uses less digits than its factorization.

122870305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445555.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 122870305 is about 11084.6878620916. The cubic root of 122870305 is about 497.1441256872.

The spelling of 122870305 in words is "one hundred twenty-two million, eight hundred seventy thousand, three hundred five".