122405345 has 8 divisors (see below), whose sum is σ = 149294760. Its totient is φ = 96318720.

The previous prime is 122405341. The next prime is 122405351. The reversal of 122405345 is 543504221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3508129 + 118897216 = 1873^2 + 10904^2 .

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

It is not a de Polignac number, because 122405345 - 2² = 122405341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122405341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200360 + ... + 200969.

It is an arithmetic number, because the mean of its divisors is an integer number (18661845).

Almost surely, 2^122405345 is an apocalyptic number.

It is an amenable number.

122405345 is a deficient number, since it is larger than the sum of its proper divisors (26889415).

122405345 is an equidigital number, since it uses as much as digits as its factorization.

122405345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401395.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 122405345 is about 11063.6949072179. The cubic root of 122405345 is about 496.5162432523.

Adding to 122405345 its reverse (543504221), we get a palindrome (665909566).

The spelling of 122405345 in words is "one hundred twenty-two million, four hundred five thousand, three hundred forty-five".