121605441 has 8 divisors (see below), whose sum is σ = 162238944. Its totient is φ = 81021120.

The previous prime is 121605427. The next prime is 121605443. The reversal of 121605441 is 144506121.

It is a happy number.

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

It is not a de Polignac number, because 121605441 - 2⁵ = 121605409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121605443) 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, 6075 + ... + 16736.

It is an arithmetic number, because the mean of its divisors is an integer number (20279868).

Almost surely, 2^121605441 is an apocalyptic number.

It is an amenable number.

121605441 is a deficient number, since it is larger than the sum of its proper divisors (40633503).

121605441 is a wasteful number, since it uses less digits than its factorization.

121605441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24591.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 121605441 is about 11027.4857061798. The cubic root of 121605441 is about 495.4323210156.

The spelling of 121605441 in words is "one hundred twenty-one million, six hundred five thousand, four hundred forty-one".