121268609 has 8 divisors (see below), whose sum is σ = 151192128. Its totient is φ = 94494960.

The previous prime is 121268603. The next prime is 121268677. The reversal of 121268609 is 906862121.

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

It is not a de Polignac number, because 121268609 - 2⁸ = 121268353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121268603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787382 + ... + 787535.

It is an arithmetic number, because the mean of its divisors is an integer number (18899016).

Almost surely, 2^121268609 is an apocalyptic number.

It is an amenable number.

121268609 is a deficient number, since it is larger than the sum of its proper divisors (29923519).

121268609 is a wasteful number, since it uses less digits than its factorization.

121268609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574935.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 121268609 is about 11012.2027315156. The cubic root of 121268609 is about 494.9744693155.

It can be divided in two parts, 12 and 1268609, that added together give a palindrome (1268621).

The spelling of 121268609 in words is "one hundred twenty-one million, two hundred sixty-eight thousand, six hundred nine".