240521121 has 6 divisors (see below), whose sum is σ = 347419410. Its totient is φ = 160347408.

The previous prime is 240521093. The next prime is 240521123. The reversal of 240521121 is 121125042.

240521121 is a `hidden beast` number, since 24 + 0 + 521 + 121 = 666.

240521121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 239166225 + 1354896 = 15465^2 + 1164^2 .

It is not a de Polignac number, because 240521121 - 2²³ = 232132513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240521094 and 240521103.

It is not an unprimeable number, because it can be changed into a prime (240521123) 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, 13362276 + ... + 13362293.

It is an arithmetic number, because the mean of its divisors is an integer number (57903235).

Almost surely, 2^240521121 is an apocalyptic number.

It is an amenable number.

240521121 is a deficient number, since it is larger than the sum of its proper divisors (106898289).

240521121 is a wasteful number, since it uses less digits than its factorization.

240521121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26724575 (or 26724572 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 240521121 is about 15508.7433726914. The cubic root of 240521121 is about 621.8959660650.

Adding to 240521121 its reverse (121125042), we get a palindrome (361646163).

The spelling of 240521121 in words is "two hundred forty million, five hundred twenty-one thousand, one hundred twenty-one".