122432109409 has 3 divisors (see below), whose sum is σ = 122432459313. Its totient is φ = 122431759506.

The previous prime is 122432109407. The next prime is 122432109461. The reversal of 122432109409 is 904901234221.

The square root of 122432109409 is 349903.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 122432109409 - 2¹ = 122432109407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122432109407) 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 2 ways as a sum of consecutive naturals, for example, 174952 + ... + 524854.

It is an arithmetic number, because the mean of its divisors is an integer number (40810819771).

Almost surely, 2^122432109409 is an apocalyptic number.

122432109409 is the 349903-rd square number.

122432109409 is the 174952-nd centered octagonal number.

It is an amenable number.

122432109409 is a deficient number, since it is larger than the sum of its proper divisors (349904).

122432109409 is an frugal number, since it uses more digits than its factorization.

122432109409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699806 (or 349903 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 122432109409 in words is "one hundred twenty-two billion, four hundred thirty-two million, one hundred nine thousand, four hundred nine".