154121121 has 36 divisors (see below), whose sum is σ = 282516624. Its totient is φ = 80060400.

The previous prime is 154121117. The next prime is 154121153. The reversal of 154121121 is 121121451.

154121121 is a `hidden beast` number, since 1 + 541 + 2 + 1 + 121 = 666.

It is not a de Polignac number, because 154121121 - 2² = 154121117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 154121094 and 154121103.

It is not an unprimeable number, because it can be changed into a prime (154121111) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11035 + ... + 20736.

It is an arithmetic number, because the mean of its divisors is an integer number (7847684).

Almost surely, 2^154121121 is an apocalyptic number.

154121121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

154121121 is a deficient number, since it is larger than the sum of its proper divisors (128395503).

154121121 is a wasteful number, since it uses less digits than its factorization.

154121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31802 (or 31792 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 154121121 is about 12414.5527909788. The cubic root of 154121121 is about 536.1513284474.

Adding to 154121121 its reverse (121121451), we get a palindrome (275242572).

The spelling of 154121121 in words is "one hundred fifty-four million, one hundred twenty-one thousand, one hundred twenty-one".