121404055 has 16 divisors (see below), whose sum is σ = 157541760. Its totient is φ = 89462272.

The previous prime is 121404043. The next prime is 121404077. The reversal of 121404055 is 550404121.

It is a cyclic number.

It is not a de Polignac number, because 121404055 - 2⁹ = 121403543 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11200 + ... + 19189.

It is an arithmetic number, because the mean of its divisors is an integer number (9846360).

Almost surely, 2^121404055 is an apocalyptic number.

121404055 is a deficient number, since it is larger than the sum of its proper divisors (36137705).

121404055 is a wasteful number, since it uses less digits than its factorization.

121404055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30458.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 121404055 is about 11018.3508294118. The cubic root of 121404055 is about 495.1586812286.

Adding to 121404055 its reverse (550404121), we get a palindrome (671808176).

The spelling of 121404055 in words is "one hundred twenty-one million, four hundred four thousand, fifty-five".