122315405 has 8 divisors (see below), whose sum is σ = 146840472. Its totient is φ = 97811008.

The previous prime is 122315399. The next prime is 122315411. The reversal of 122315405 is 504513221.

It is an interprime number because it is at equal distance from previous prime (122315399) and next prime (122315411).

It can be written as a sum of positive squares in 4 ways, for example, as 3374569 + 118940836 = 1837^2 + 10906^2 .

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 122315405 - 2²⁰ = 121266829 is a prime.

It is a super-2 number, since 2×122315405² = 29922116600628050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 15059 + ... + 21711.

It is an arithmetic number, because the mean of its divisors is an integer number (18355059).

Almost surely, 2^122315405 is an apocalyptic number.

It is an amenable number.

122315405 is a deficient number, since it is larger than the sum of its proper divisors (24525067).

122315405 is an equidigital number, since it uses as much as digits as its factorization.

122315405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10335.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 122315405 is about 11059.6295145904. The cubic root of 122315405 is about 496.3946047381.

Adding to 122315405 its reverse (504513221), we get a palindrome (626828626).

The spelling of 122315405 in words is "one hundred twenty-two million, three hundred fifteen thousand, four hundred five".