121276605 has 8 divisors (see below), whose sum is σ = 194042592. Its totient is φ = 64680848.

The previous prime is 121276583. The next prime is 121276609. The reversal of 121276605 is 506672121.

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

It is a cyclic number.

It is not a de Polignac number, because 121276605 - 2⁶ = 121276541 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121276609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4042539 + ... + 4042568.

It is an arithmetic number, because the mean of its divisors is an integer number (24255324).

Almost surely, 2^121276605 is an apocalyptic number.

121276605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121276605 is a deficient number, since it is larger than the sum of its proper divisors (72765987).

121276605 is an equidigital number, since it uses as much as digits as its factorization.

121276605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8085115.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 121276605 is about 11012.5657773291. The cubic root of 121276605 is about 494.9853480001.

The spelling of 121276605 in words is "one hundred twenty-one million, two hundred seventy-six thousand, six hundred five".