121768477 has 8 divisors (see below), whose sum is σ = 126891000. Its totient is φ = 116707584.

The previous prime is 121768469. The next prime is 121768513. The reversal of 121768477 is 774867121.

It can be written as a sum of positive squares in 4 ways, for example, as 1887876 + 119880601 = 1374^2 + 10949^2 .

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 121768477 - 2³ = 121768469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121768457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11352 + ... + 19297.

It is an arithmetic number, because the mean of its divisors is an integer number (15861375).

Almost surely, 2^121768477 is an apocalyptic number.

It is an amenable number.

121768477 is a deficient number, since it is larger than the sum of its proper divisors (5122523).

121768477 is a wasteful number, since it uses less digits than its factorization.

121768477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30815.

The product of its digits is 131712, while the sum is 43.

The square root of 121768477 is about 11034.8754863841. The cubic root of 121768477 is about 495.6536302832.

The spelling of 121768477 in words is "one hundred twenty-one million, seven hundred sixty-eight thousand, four hundred seventy-seven".