121455441 has 6 divisors (see below), whose sum is σ = 175435650. Its totient is φ = 80970288.

The previous prime is 121455421. The next prime is 121455443. The reversal of 121455441 is 144554121.

121455441 is a `hidden beast` number, since 1 + 214 + 5 + 5 + 441 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86881041 + 34574400 = 9321^2 + 5880^2 .

It is not a de Polignac number, because 121455441 - 2⁵ = 121455409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121455443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6747516 + ... + 6747533.

It is an arithmetic number, because the mean of its divisors is an integer number (29239275).

Almost surely, 2^121455441 is an apocalyptic number.

It is an amenable number.

121455441 is a deficient number, since it is larger than the sum of its proper divisors (53980209).

121455441 is a wasteful number, since it uses less digits than its factorization.

121455441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13495055 (or 13495052 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 121455441 is about 11020.6824198867. The cubic root of 121455441 is about 495.2285323687.

The spelling of 121455441 in words is "one hundred twenty-one million, four hundred fifty-five thousand, four hundred forty-one".