122405135 has 4 divisors (see below), whose sum is σ = 146886168. Its totient is φ = 97924104.

The previous prime is 122405093. The next prime is 122405137. The reversal of 122405135 is 531504221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531504221 = 223 ⋅2383427.

It is a cyclic number.

It is not a de Polignac number, because 122405135 - 2⁶ = 122405071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122405135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122405137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12240509 + ... + 12240518.

It is an arithmetic number, because the mean of its divisors is an integer number (36721542).

Almost surely, 2^122405135 is an apocalyptic number.

122405135 is a deficient number, since it is larger than the sum of its proper divisors (24481033).

122405135 is an equidigital number, since it uses as much as digits as its factorization.

122405135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24481032.

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

The square root of 122405135 is about 11063.6854167135. The cubic root of 122405135 is about 496.5159593091.

Adding to 122405135 its reverse (531504221), we get a palindrome (653909356).

The spelling of 122405135 in words is "one hundred twenty-two million, four hundred five thousand, one hundred thirty-five".