122242405 has 4 divisors (see below), whose sum is σ = 146690892. Its totient is φ = 97793920.

The previous prime is 122242391. The next prime is 122242411. The reversal of 122242405 is 504242221.

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 37933281 + 84309124 = 6159^2 + 9182^2 .

It is not a de Polignac number, because 122242405 - 2⁹ = 122241893 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 12224236 + ... + 12224245.

It is an arithmetic number, because the mean of its divisors is an integer number (36672723).

Almost surely, 2^122242405 is an apocalyptic number.

It is an amenable number.

122242405 is a deficient number, since it is larger than the sum of its proper divisors (24448487).

122242405 is an equidigital number, since it uses as much as digits as its factorization.

122242405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24448486.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 122242405 is about 11056.3287306411. The cubic root of 122242405 is about 496.2958327220.

Adding to 122242405 its reverse (504242221), we get a palindrome (626484626).

The spelling of 122242405 in words is "one hundred twenty-two million, two hundred forty-two thousand, four hundred five".