23540121 has 48 divisors (see below), whose sum is σ = 40030848. Its totient is φ = 13171200.

The previous prime is 23540113. The next prime is 23540123. The reversal of 23540121 is 12104532.

23540121 is a `hidden beast` number, since 2 + 3 + 540 + 121 = 666.

It is not a de Polignac number, because 23540121 - 2³ = 23540113 is a prime.

It is a super-3 number, since 3×23540121³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23540094 and 23540103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23540123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119395 + ... + 119591.

It is an arithmetic number, because the mean of its divisors is an integer number (833976).

Almost surely, 2^23540121 is an apocalyptic number.

It is an amenable number.

23540121 is a deficient number, since it is larger than the sum of its proper divisors (16490727).

23540121 is a wasteful number, since it uses less digits than its factorization.

23540121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 23540121 is about 4851.8162578564. The cubic root of 23540121 is about 286.5956297452.

Adding to 23540121 its reverse (12104532), we get a palindrome (35644653).

The spelling of 23540121 in words is "twenty-three million, five hundred forty thousand, one hundred twenty-one".