122909429 has 4 divisors (see below), whose sum is σ = 123399360. Its totient is φ = 122419500.

The previous prime is 122909419. The next prime is 122909441. The reversal of 122909429 is 924909221.

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 122909429 - 2²⁰ = 121860853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122909392 and 122909401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122909419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244589 + ... + 245090.

It is an arithmetic number, because the mean of its divisors is an integer number (30849840).

Almost surely, 2^122909429 is an apocalyptic number.

It is an amenable number.

122909429 is a deficient number, since it is larger than the sum of its proper divisors (489931).

122909429 is an equidigital number, since it uses as much as digits as its factorization.

122909429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489930.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 122909429 is about 11086.4524984325. The cubic root of 122909429 is about 497.1968864762.

The spelling of 122909429 in words is "one hundred twenty-two million, nine hundred nine thousand, four hundred twenty-nine".