122421309 has 8 divisors (see below), whose sum is σ = 163445952. Its totient is φ = 81505440.

The previous prime is 122421293. The next prime is 122421311. The reversal of 122421309 is 903124221.

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

It is not a de Polignac number, because 122421309 - 2⁴ = 122421293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122421319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24529 + ... + 29094.

It is an arithmetic number, because the mean of its divisors is an integer number (20430744).

Almost surely, 2^122421309 is an apocalyptic number.

It is an amenable number.

122421309 is a deficient number, since it is larger than the sum of its proper divisors (41024643).

122421309 is an equidigital number, since it uses as much as digits as its factorization.

122421309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54387.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 122421309 is about 11064.4163424918. The cubic root of 122421309 is about 496.5378273880.

The spelling of 122421309 in words is "one hundred twenty-two million, four hundred twenty-one thousand, three hundred nine".