240421242121 has 8 divisors (see below), whose sum is σ = 242686699200. Its totient is φ = 238156871760.

The previous prime is 240421242107. The next prime is 240421242137. The reversal of 240421242121 is 121242124042.

240421242121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240421242121 - 2³⁷ = 102982288649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240421242101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176340 + ... + 715498.

It is an arithmetic number, because the mean of its divisors is an integer number (30335837400).

Almost surely, 2^240421242121 is an apocalyptic number.

It is an amenable number.

240421242121 is a deficient number, since it is larger than the sum of its proper divisors (2265457079).

240421242121 is a wasteful number, since it uses less digits than its factorization.

240421242121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543359.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 240421242121 its reverse (121242124042), we get a palindrome (361663366163).

The spelling of 240421242121 in words is "two hundred forty billion, four hundred twenty-one million, two hundred forty-two thousand, one hundred twenty-one".