122412409 has 4 divisors (see below), whose sum is σ = 139899904. Its totient is φ = 104924916.

The previous prime is 122412401. The next prime is 122412419. The reversal of 122412409 is 904214221.

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 122412409 - 2³ = 122412401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122412401) 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, 8743737 + ... + 8743750.

It is an arithmetic number, because the mean of its divisors is an integer number (34974976).

Almost surely, 2^122412409 is an apocalyptic number.

It is an amenable number.

122412409 is a deficient number, since it is larger than the sum of its proper divisors (17487495).

122412409 is an equidigital number, since it uses as much as digits as its factorization.

122412409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17487494.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 122412409 is about 11064.0141449657. The cubic root of 122412409 is about 496.5257943692.

The spelling of 122412409 in words is "one hundred twenty-two million, four hundred twelve thousand, four hundred nine".