122836409 has 4 divisors (see below), whose sum is σ = 122930304. Its totient is φ = 122742516.

The previous prime is 122836403. The next prime is 122836453. The reversal of 122836409 is 904638221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122836409 - 2²⁰ = 121787833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122836403) 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, 44957 + ... + 47610.

It is an arithmetic number, because the mean of its divisors is an integer number (30732576).

Almost surely, 2^122836409 is an apocalyptic number.

It is an amenable number.

122836409 is a deficient number, since it is larger than the sum of its proper divisors (93895).

122836409 is an equidigital number, since it uses as much as digits as its factorization.

122836409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93894.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 122836409 is about 11083.1588006308. The cubic root of 122836409 is about 497.0984060777.

The spelling of 122836409 in words is "one hundred twenty-two million, eight hundred thirty-six thousand, four hundred nine".