121577705 has 8 divisors (see below), whose sum is σ = 146462472. Its totient is φ = 96882688.

The previous prime is 121577699. The next prime is 121577719. The reversal of 121577705 is 507775121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8133904 + 113443801 = 2852^2 + 10651^2 .

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 121577705 - 2¹⁰ = 121576681 is a prime.

It is a super-2 number, since 2×121577705² = 29562276706134050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46022 + ... + 48591.

It is an arithmetic number, because the mean of its divisors is an integer number (18307809).

Almost surely, 2^121577705 is an apocalyptic number.

It is an amenable number.

121577705 is a deficient number, since it is larger than the sum of its proper divisors (24884767).

121577705 is an equidigital number, since it uses as much as digits as its factorization.

121577705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94875.

The product of its (nonzero) digits is 17150, while the sum is 35.

The square root of 121577705 is about 11026.2280495190. The cubic root of 121577705 is about 495.3946517699.

The spelling of 121577705 in words is "one hundred twenty-one million, five hundred seventy-seven thousand, seven hundred five".